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♪♪
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00:00:02,896 --> 00:00:07,310
Narrator: ANIMALS...
DO THE MOST INCREDIBLE THINGS.
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00:00:07,310 --> 00:00:09,068
[ GOAT BLEATS ]
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00:00:09,068 --> 00:00:10,758
LIKE THIS...
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00:00:10,758 --> 00:00:12,206
AND THIS.
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00:00:12,206 --> 00:00:15,862
I BET YOU'RE WONDERING,
"HOW DO THEY DO THAT?"
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00:00:15,862 --> 00:00:20,620
WE'RE REVEALING ANIMALS'
BIGGEST SECRETS, LIKE...
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HOW DO BEES FIND NECTAR?
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00:00:23,965 --> 00:00:27,586
WHY DO CATS HAVE WHISKERS?
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00:00:27,586 --> 00:00:30,517
AND HOW CAN A JELLYFISH
LIVE FOREVER?
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00:00:32,551 --> 00:00:35,413
THESE WONDERS AND MORE ON...
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00:00:35,413 --> 00:00:38,103
--Captions by VITAC--
www.vitac.com
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CAPTIONS PAID FOR BY
DISCOVERY COMMUNICATIONS
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HONEYBEES. ONE OF THE WONDERS
OF THE INSECT WORLD.
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THEY RELY ON SWEET SUGARY NECTAR
AS THEIR MAIN SOURCE OF FOOD,
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00:00:49,965 --> 00:00:51,862
AND THEY'RE ON
A MAMMOTH MISSION --
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00:00:51,862 --> 00:00:55,862
TO FIND ENOUGH
TO FEED THEIR ENTIRE COLONY.
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00:00:55,862 --> 00:01:00,206
IN ONE DAY, A BEE CAN COVER
AN AREA OF AROUND 6 MILES
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AND VISIT UP TO 2,000 FLOWERS.
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IT'S A MONUMENTAL TASK,
MADE EVEN HARDER
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BECAUSE NOT ALL FLOWERS
CONTAIN NECTAR.
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00:01:12,310 --> 00:01:16,000
SO HOW DO BEES FIND NECTAR?
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00:01:20,965 --> 00:01:24,241
A HIVE IN A COUNTRY GARDEN.
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INSIDE, 60,000 BEES.
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THE QUEEN IS TENDED BY MALES,
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WHOSE SOLE PURPOSE
IS TO MATE WITH HER MAJESTY.
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IT'S THE FEMALES THAT DO ALL THE
WORK AND BRING BACK THE FOOD.
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THEY ARE EXPERT NECTAR HUNTERS.
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AN ALL-GIRL SCOUT PARTY
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PREPS FOR A RECON PATROL
OF THE BIG FLOWERY WORLD.
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THEIR MISSION, SHOULD THEY
CHOOSE TO ACCEPT IT,
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00:01:51,724 --> 00:01:55,413
TO FIND A SOURCE OF JUICY NECTAR
AND REPORT BACK.
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♪♪
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TO FIND THE NECTAR, THESE LADIES
HAVE SOME AMAZING SUPER-SENSES.
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♪♪
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TWO TINY ANTENNAE CAN TRACE
THE SCENT OF FLOWERS
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FROM A MILE AWAY.
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THEY HAVE A WHOPPING
170 ODOR RECEPTORS,
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100 TIMES MORE POWERFUL
THAN A HUMAN'S SENSE OF SMELL,
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HELPING THE BEE TO FOLLOW THE
FAINTEST WHIFF OF A NECTAR TRAIL
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ALL THE WAY TO THE SOURCE.
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TO TELL A FLOWER WITH NECTAR
FROM ONE WITHOUT,
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ANOTHER INSTRUMENT FROM
THE BEE'S SUPER-SENSE TOOLBOX
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KICKS IN -- THEIR EYES.
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BEES HAVE FIVE EYES,
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WHICH GIVE THEM A 300-DEGREE,
WIDE-ANGLE VIEW.
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THEY CAN ALSO SEE
DIFFERENT KINDS OF LIGHT,
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INCLUDING ULTRAVIOLET,
WHICH WE CAN'T SEE.
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THIS IS A FLOWER AS WE SEE IT.
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00:02:53,793 --> 00:02:56,931
NOW, THIS IS WHAT THE BEE SEES.
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THE U.V. LIGHT REVEALS
A HIDDEN PATTERN
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WITHIN THE FLOWER,
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IDENTIFYING WHERE NECTAR
CAN BE FOUND.
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IT'S LIKE LIGHTS ON A RUNWAY
GUIDING THE BEE IN TO LAND.
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[ TIRES SCREECH ]
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TOUCHDOWN. RIGHT ON THE NECTAR.
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BUT THERE'S AN EVEN MORE
UN-BEE-LIEVABLE METHOD BEES USE
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TO FIND THE SWEET STUFF.
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THEY CAN SENSE
AN INVISIBLE FORCE
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FOUND IN ALL LIVING THINGS --
ELECTRICITY.
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♪♪
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BEE EXPERT
PROFESSOR DANIEL ROBERTS
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DEMONSTRATES THIS AMAZING
BEE POWER WITH A MACHINE.
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THIS FLOWER HAS A SMALL ELECTRIC
FIELD SURROUNDING ITSELF.
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00:03:37,206 --> 00:03:39,241
WE CAN SEE IT. WE CAN FEEL IT.
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THIS ELECTRODE HERE
WILL BASICALLY DETECT THAT.
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00:03:42,689 --> 00:03:46,241
AND THIS DEVICE WILL
CONVERT THAT INTO A SOUND.
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[ HIGH-PITCHED BUZZ ]
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Narrator:
INCREDIBLY, THIS SOUND IS MADE
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BY THE FLOWER'S
NATURAL ELECTRICAL CHARGE.
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THAT'S RIGHT. YOU'RE
LISTENING TO FLOWER POWER.
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BEES CAN SENSE
THIS ELECTRIC CHARGE
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AND ARE DRAWN
TOWARDS THE FLOWER.
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00:04:04,896 --> 00:04:06,793
AS THE BEE MOVES IN,
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00:04:06,793 --> 00:04:09,724
THE SOUND OF PROFESSOR ROBERTS'
MACHINE CHANGES.
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00:04:09,724 --> 00:04:14,379
THIS IS A LITTLE BIT LIKE WHEN
ONE RUBS A BALLOON OVER HEADS.
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THE BALLOON STICKS TO THE WALL
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00:04:16,172 --> 00:04:19,482
WHILST OUR HAIR TENDS
TO BRUSH UP LIKE THIS.
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Narrator:
BUT THAT'S NOT ALL.
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00:04:21,137 --> 00:04:25,413
BY FLAPPING THEIR TINY WINGS
AT 230 BEATS A SECOND,
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BEES CREATE SO MUCH FRICTION,
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00:04:27,620 --> 00:04:31,172
THEY GIVE THEMSELVES
AN ELECTRICAL CHARGE.
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SO, WHEN A BEE TAKES NECTAR
FROM THE FLOWER,
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THE CHARGES INTERACT.
85
00:04:36,586 --> 00:04:40,000
AND AMAZINGLY, THE BEE'S
OWN ELECTRICAL CHARGE
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CANCELS OUT THE FLOWER'S.
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SO, WHEN ANOTHER BEE FLIES OVER,
IT SENSES THIS CHANGE
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AND KNOWS THERE IS NO NECTAR
TO BE FOUND.
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00:04:49,689 --> 00:04:52,275
IT'S LIKE A NEON SIGN
TO A BEE SAYING...
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"NO NECTAR HERE!
COME BACK LATER."
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ONCE THEY'VE FOUND THE SOURCE
OF JUICY, SWEET NECTAR,
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00:05:01,000 --> 00:05:03,206
THEY HEAD HOME
TO TELL ALL THE OTHER BEES
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00:05:03,206 --> 00:05:05,931
AND DISH OUT DIRECTIONS.
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00:05:05,931 --> 00:05:09,206
THE PROBLEM IS,
THEY'RE NOT GREAT TALKERS.
95
00:05:09,206 --> 00:05:12,000
INSTEAD, THEY LIKE
TO EXPRESS THEMSELVES
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00:05:12,000 --> 00:05:14,000
THROUGH THE MEDIUM OF DANCE.
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♪♪
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THIS IS NO TANGO.
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00:05:20,413 --> 00:05:21,896
INCREDIBLE AS IT MAY SEEM,
100
00:05:21,896 --> 00:05:25,620
THIS WAGGLE DANCE
IS GIVING PRECISE DIRECTIONS.
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00:05:25,620 --> 00:05:27,206
IT'S A SECRET CODE
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THAT REVEALS THE EXACT LOCATION
OF THE NECTAR,
103
00:05:30,655 --> 00:05:34,275
AND SCIENTISTS HAVE FOUND A WAY
TO DECIPHER IT.
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00:05:34,275 --> 00:05:36,517
IT'S ALWAYS A FIGURE EIGHT,
105
00:05:36,517 --> 00:05:38,103
AND THE WIDTH OF THE WAGGLE
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00:05:38,103 --> 00:05:41,344
SHOWS HOW FAR THE NECTAR IS
FROM THE HIVE --
107
00:05:41,344 --> 00:05:43,689
THE WIDER, THE FARTHER.
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00:05:43,689 --> 00:05:46,551
THE ANGLE OF THE DANCE
REVEALS THE DIRECTION,
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00:05:46,551 --> 00:05:48,827
AND IT'S INCREDIBLY ACCURATE.
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00:05:48,827 --> 00:05:50,965
IT'S LIKE GOING
BACK TO THE OFFICE
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00:05:50,965 --> 00:05:52,448
AND TELLING YOUR FRIENDS,
112
00:05:52,448 --> 00:05:56,275
"HEY, THEY ARE HANDING OUT
FREE PIZZAS ON THIRD STREET."
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Narrator:
ARMED WITH A BEE VERSION OF GPS,
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THIS SINGLE COLONY WILL VISIT
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00:06:00,551 --> 00:06:05,379
AROUND 500 MILLION FLOWERS
IN JUST ONE YEAR.
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00:06:05,379 --> 00:06:08,655
GIVEN HOW CLEVER
THESE BRILLIANT BEES ARE,
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00:06:08,655 --> 00:06:10,724
I'M SURE IT WON'T BE LONG
BEFORE THEY WORK OUT
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00:06:10,724 --> 00:06:13,827
HOW TO ORDER NECTAR ONLINE.
119
00:06:18,206 --> 00:06:22,344
CATS. THEY'RE CUTE.
SOMETIMES VERY CUTE.
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00:06:22,344 --> 00:06:26,034
AND LAZY. SOMETIMES VERY LAZY.
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[ CAT PURRING ]
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THEY LOVE TO PLAY.
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00:06:30,206 --> 00:06:32,620
HELLO!
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00:06:32,620 --> 00:06:36,827
THEY HAVE FABULOUS FUR
TO STAY WARM. YES.
125
00:06:36,827 --> 00:06:39,344
KILLER CLAWS TO CATCH PREY.
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00:06:39,344 --> 00:06:41,034
AND WHISKERS TO...
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00:06:41,034 --> 00:06:44,000
HMM. WHAT AREWHISKERS FOR?
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IS THIS FABULOUS FELINE MUSTACHE
JUST FOR SHOW?
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00:06:48,413 --> 00:06:52,000
WHY DO CATS HAVE WHISKERS?
130
00:06:54,482 --> 00:06:57,068
THIS IS TIGER...
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00:06:57,068 --> 00:06:59,724
AND HIS BEST FRIEND, CLARK.
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TWO BEAUTIFUL CATS WITH TWO
INCREDIBLE SETS OF WHISKERS.
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00:07:05,310 --> 00:07:08,344
AND THEIR HUMAN SERVANT IS DAN.
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00:07:08,344 --> 00:07:10,413
Dan:
OKAY, GUYS. HERE YOU GO.
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00:07:10,413 --> 00:07:13,586
Narrator: SURE, DAN HAS
SOME GREAT FACIAL HAIR,
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00:07:13,586 --> 00:07:17,241
BUT NO THICK WHISKERS
LIKE TIGER AND CLARK.
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00:07:17,241 --> 00:07:19,310
HE DOES KNOW ABOUT CATS, THOUGH.
138
00:07:19,310 --> 00:07:21,275
HE'S A CAT CONSULTANT.
139
00:07:21,275 --> 00:07:23,206
Dan: MY JOB IS BASICALLY
TO HELP PEOPLE
140
00:07:23,206 --> 00:07:24,931
INTERPRET THEIR CATS
A LITTLE BIT BETTER.
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00:07:24,931 --> 00:07:27,206
I THINK PEOPLE A LOT OF TIMES
DON'T UNDERSTAND
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WHAT THEIR CATS
ARE TELLING THEM,
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00:07:28,793 --> 00:07:33,172
AND I HELP THEM BE
BETTER SERVANTS TO THEIR CATS.
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00:07:33,172 --> 00:07:35,517
Narrator:
DAN KNOWS TIGER'S FACIAL HAIRS
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AREN'T JUST THERE TO LOOK GOOD.
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ALONG WITH HIS SIGHT,
SMELL, AND HEARING,
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TIGER'S WHISKERS
ARE A CRUCIAL PART
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OF HIS PREY-DETECTION SYSTEM,
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00:07:45,413 --> 00:07:48,034
AND DAN IS GOING TO
DEMONSTRATE HOW.
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00:07:48,034 --> 00:07:51,931
WITH THIS TOY, WE'LL SEE WHAT
TIGER'S WHISKERS ARE USED FOR.
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00:07:51,931 --> 00:07:55,413
Narrator: SPOTTING HIS PREY,
TIGER'S CLAWS ENGAGE.
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♪♪
153
00:07:58,448 --> 00:08:04,448
IN SLOW MOTION, YOU CAN SEE
TIGER'S WHISKERS ALSO ENGAGE.
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00:08:04,448 --> 00:08:07,206
FIRST, THEY'RE FLAT BY HIS FACE,
155
00:08:07,206 --> 00:08:09,241
BUT THEN HE ENTERS ATTACK MODE,
156
00:08:09,241 --> 00:08:14,517
THROWING THE WHISKERS FORWARD
TO FEEL HIS PREY.
157
00:08:14,517 --> 00:08:18,241
IT'S LIKE A HAIRY
TARGETING SYSTEM LOCKING ON.
158
00:08:18,241 --> 00:08:23,034
AND THAT'S WHEN TIGER STRIKES.
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00:08:23,034 --> 00:08:26,137
HE'S GOT THAT MOUSE SQUASHED.
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00:08:26,137 --> 00:08:28,758
Narrator:
BUT WHY ARE THEY FEELING
FOR PREY WITH THEIR WHISKERS
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00:08:28,758 --> 00:08:32,068
WHEN THEY SHOULD BE ABLE
TO JUST SEE IT?
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WELL, IT TURNS OUT
CAT VISION ISN'T PERFECT.
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00:08:35,793 --> 00:08:38,275
THEY CAN OFTENTIMES
LOSE TRACK OF SOMETHING
164
00:08:38,275 --> 00:08:40,034
WHEN IT GETS CLOSER TO THEM.
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00:08:40,034 --> 00:08:42,413
Narrator:
CATS' EYES ACTUALLY LOSE FOCUS
166
00:08:42,413 --> 00:08:45,275
ON ANYTHING
LESS THAN 10 INCHES AWAY.
167
00:08:46,862 --> 00:08:51,068
BUT INSTEAD OF GETTING
PRESCRIPTION CAT GLASSES,
168
00:08:51,068 --> 00:08:54,758
THEY USE THEIR
WHISKER-DETECTION SYSTEM.
169
00:08:54,758 --> 00:08:59,103
CATS' WHISKERS ARE SENSITIVE
TO VIBRATIONS IN THE AIR.
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00:08:59,103 --> 00:09:01,689
AS THE AIR MOVES,
THE WHISKERS VIBRATE,
171
00:09:01,689 --> 00:09:05,965
ALLOWING CATS TO SENSE THE SIZE
AND SHAPE OF NEARBY OBJECTS
172
00:09:05,965 --> 00:09:07,517
TO GO IN FOR THE KILL.
173
00:09:07,517 --> 00:09:10,482
THE WHISKERS CAN HELP THEM
FEEL TEXTURE, VIBRATION.
174
00:09:10,482 --> 00:09:14,172
THEY CAN EVEN HELP THEM FEEL
LITTLE DIFFERENCES IN THE AIR
175
00:09:14,172 --> 00:09:18,206
SOMETIMES SO THEY CAN
SENSE PREY UP REALLY CLOSE.
176
00:09:18,206 --> 00:09:21,689
Narrator: BUT THESE WHISKERS
HAVE ANOTHER FUNCTION.
177
00:09:21,689 --> 00:09:24,413
BECAUSE THEY'RE THE SAME WIDTH
AS THE CAT'S BODY,
178
00:09:24,413 --> 00:09:25,793
WHISKERS HELP THEM FEEL
179
00:09:25,793 --> 00:09:29,724
WHETHER THEY CAN MAKE
THAT TIGHT SQUEEZE...
180
00:09:29,724 --> 00:09:33,379
MAKING CATS THE PERFECT
PURRING PREDATORS.
181
00:09:33,379 --> 00:09:35,862
[ CATS PURRING ]
182
00:09:38,517 --> 00:09:43,448
COMING UP, SUPER-FAST HIPPOS,
MIRACLE LIZARDS,
183
00:09:43,448 --> 00:09:46,931
AND A JELLYFISH
THAT LIVES FOREVER.
184
00:09:56,068 --> 00:10:01,137
Narrator: A PEACEFUL DAY ON THE
CHOBE RIVER IN BOTSWANA, AFRICA.
185
00:10:01,137 --> 00:10:04,724
♪♪
186
00:10:04,724 --> 00:10:08,275
MAJESTIC BEASTS ARE DRAWN
TO THE RIVER'S BOUNTY.
187
00:10:08,275 --> 00:10:10,517
♪♪
188
00:10:10,517 --> 00:10:14,827
BUT IN THE DISTANCE,
THE WATER BEGINS TO CHURN.
189
00:10:14,827 --> 00:10:18,482
SOMETHING IS SPEEDING TOWARDS
A BOAT FULL OF PEOPLE.
190
00:10:18,482 --> 00:10:21,965
WHAT IS IT?
IS IT A CROCODILE? A WHALE?
191
00:10:26,620 --> 00:10:28,310
HANG ON.[ TAPE REWINDING ]
192
00:10:28,310 --> 00:10:32,206
HOW DOES A DOUGHBOY HIPPO
TORPEDO THROUGH THE WATER?
193
00:10:32,206 --> 00:10:35,551
HIPPOS ARE ABOUT
AS STREAMLINED AS A SEMI.
194
00:10:35,551 --> 00:10:37,931
BUT LOOK AT THAT
DOUGHNUT DYNAMO GO.
195
00:10:40,896 --> 00:10:46,241
SO HOW DO HIPPOS SWIM SO FAST?
196
00:10:46,241 --> 00:10:50,275
THERE ARE TWO TYPES
OF HIPPOPOTAMUS IN AFRICA --
197
00:10:50,275 --> 00:10:52,448
THE PYGMY HIPPO...
198
00:10:52,448 --> 00:10:56,896
AND ITS MUCH LARGER COUSIN,
THE COMMON HIPPO.
199
00:10:56,896 --> 00:10:59,000
THESE MAGNIFICENT BEASTS
200
00:10:59,000 --> 00:11:03,310
SPEND TWO-THIRDS OF THEIR DAY
WALLOWING IN WATER.
201
00:11:03,310 --> 00:11:07,379
BUT IF YOU EVER GO
HIPPO SPOTTING, BE CAREFUL.
202
00:11:07,379 --> 00:11:09,931
THEY'RE EXTREMELY DANGEROUS.
203
00:11:09,931 --> 00:11:12,793
IN FACT, HIPPOS KILL
MORE HUMANS EACH YEAR
204
00:11:12,793 --> 00:11:17,172
THAN GREAT WHITE SHARKS
AND LIONS COMBINED.
205
00:11:17,172 --> 00:11:20,655
THESE GUYS ARE LETHAL.
206
00:11:20,655 --> 00:11:23,551
SO WE'RE KEEPING OUR DISTANCE.
207
00:11:23,551 --> 00:11:26,724
TO FIND OUT
HOW HIPPOS SWIM SO FAST,
208
00:11:26,724 --> 00:11:30,241
WE'RE SAFELY ON THE RIGHT SIDE
OF A 3.5-INCH-THICK GLASS
209
00:11:30,241 --> 00:11:34,413
AT CINCINNATI ZOO
TO STUDY FIONA.
210
00:11:34,413 --> 00:11:35,758
NO, NOT HER.
211
00:11:35,758 --> 00:11:39,655
HER -- AMERICA'S
MOST FAMOUS HIPPO.
212
00:11:39,655 --> 00:11:42,862
FIONA WAS BORN
SIX WEEKS PREMATURE
213
00:11:42,862 --> 00:11:48,655
BUT BEAT THE ODDS AND BECAME
AN INTERNET SENSATION.
214
00:11:48,655 --> 00:11:50,620
Woman: WE LOVED WATCHING HER
GROW UP FROM A PREMIE
215
00:11:50,620 --> 00:11:52,482
INTO THE HIPPO SHE IS NOW.
216
00:11:52,482 --> 00:11:54,206
SHE'S ONE OF THE GREATEST
ANIMALS AT THE ZOO.
217
00:11:54,206 --> 00:11:58,379
I THINK SHE'S ADORABLE.
I'M COMPLETELY OBSESSED.
218
00:11:58,379 --> 00:12:01,896
Narrator:
FIONA NOW LIVES HAPPILY
IN THE TANK WITH MUM BIBI.
219
00:12:01,896 --> 00:12:05,586
AND WATCHING OVER BOTH
IS ZOOKEEPER JENNA WINGATE.
220
00:12:05,586 --> 00:12:07,586
COME HERE, FI!
221
00:12:07,586 --> 00:12:09,620
Wingate: FIONA TAKES A LOT
AFTER HER MOM IN THE FACT
222
00:12:09,620 --> 00:12:11,620
THAT SHE'S SASSY
AND KNOWS WHAT SHE WANTS,
223
00:12:11,620 --> 00:12:13,379
AND SHE CAN BE
A LITTLE BIT BOSSY.
224
00:12:13,379 --> 00:12:16,517
WE LIKE TO USE THE WORD "DIVA"
FOR BOTH OF THEM.
225
00:12:16,517 --> 00:12:20,517
♪♪
226
00:12:20,517 --> 00:12:22,275
Narrator:
GIVEN THEY EAT LETTUCE ALL DAY,
227
00:12:22,275 --> 00:12:26,862
YOU'D THINK FIONA AND BIBI WOULD
LOOK LIKE SKINNY SUPERMODELS,
228
00:12:26,862 --> 00:12:30,689
BUT THEY'RE BUILT MORE LIKE
HEAVYWEIGHT BOXERS.
229
00:12:30,689 --> 00:12:33,758
BELOW THEIR TWO-INCH-THICK
WATERPROOF SKIN,
230
00:12:33,758 --> 00:12:35,068
THERE'S NOT MUCH FAT.
231
00:12:35,068 --> 00:12:37,275
IT'S JUST DENSE MUSCLE.
232
00:12:37,275 --> 00:12:40,793
THAT'S RIGHT.
HIPPOS ARE RIPPED.
233
00:12:40,793 --> 00:12:43,586
THE RESULT IS
HIPPOS WEIGH A LOT.
234
00:12:43,586 --> 00:12:48,758
ONE EVEN TOPPED THE SCALES
AT A WHOPPING 9,000 POUNDS --
235
00:12:48,758 --> 00:12:53,517
THE SAME AS NOT ONE,
BUT TWO SUVs.
236
00:12:53,517 --> 00:12:56,137
SO THEY SINK LIKE A STONE.
237
00:12:56,137 --> 00:12:59,137
MOST MAMMALS, INCLUDING HUMANS,
FLOAT IN THE WATER,
238
00:12:59,137 --> 00:13:03,931
BUT HIPPOS ACTUALLY SINK
BECAUSE THEY'RE SO DENSE.
239
00:13:03,931 --> 00:13:07,000
Narrator: SINKING'S TERRIBLE
FOR SWIMMING FAST.
240
00:13:07,000 --> 00:13:11,310
SO DO HIPPOS HAVE
A SUPER-SECRET TECHNIQUE?
241
00:13:11,310 --> 00:13:14,241
WEBBED FEET? FLIPPERS?
242
00:13:14,241 --> 00:13:17,793
A HIPPO PROPELLER MAYBE?
243
00:13:17,793 --> 00:13:21,965
NO. THESE HIPPOS
AREN'T SWIMMING AT ALL.
244
00:13:21,965 --> 00:13:24,068
LOOK. THEY'RE WALKING.
245
00:13:24,068 --> 00:13:27,655
Wingate: HIPPOS SPEND ABOUT 16
HOURS OR SO A DAY IN THE WATER,
246
00:13:27,655 --> 00:13:30,379
BUT HIPPOS
CAN'T ACTUALLY SWIM.
247
00:13:30,379 --> 00:13:35,137
Narrator: YES, BELIEVE IT
OR NOT, HIPPOS CAN'T SWIM.
248
00:13:35,137 --> 00:13:39,137
BUT THEY CAN RUN
REALLY, REALLY FAST,
249
00:13:39,137 --> 00:13:42,965
HITTING SPEEDS OF UP TO
20 MILES AN HOUR ON LAND.
250
00:13:42,965 --> 00:13:46,724
WHEN THEY HIT THE WATER,
THEY SINK TO THE RIVERBED
251
00:13:46,724 --> 00:13:51,793
STILL CHARGING AS FAST
AS THE FASTEST OLYMPIANS.
252
00:13:54,172 --> 00:13:56,206
BACK AT THE ZOO,
253
00:13:56,206 --> 00:13:59,172
WATCHING FIONA AND BIBI
REVEALS ANOTHER SECRET
254
00:13:59,172 --> 00:14:02,586
TO HIPPOS' AMAZING
AQUATIC SPEED.
255
00:14:02,586 --> 00:14:06,379
THE WATER SUPPORTS
PART OF THEIR IMMENSE WEIGHT.
256
00:14:06,379 --> 00:14:11,862
HIPPOS ARE EFFECTIVELY LIVING
IN AN MICROGRAVITY ENVIRONMENT.
257
00:14:11,862 --> 00:14:16,517
ONE PUSH, AND THEY BOUNCE
LIKE AQUATIC ASTRONAUTS,
258
00:14:16,517 --> 00:14:20,310
COVERING A HUGE DISTANCE
WITH EACH STRIDE.
259
00:14:20,310 --> 00:14:24,655
YOU'VE HEARD OF THE MOONWALK.
THIS IS THE HIPPO HOP.
260
00:14:24,655 --> 00:14:27,724
IT'S ONE SMALL STEP FOR HIPPOS,
261
00:14:27,724 --> 00:14:30,206
BUT ONE GIANT LEAP
FOR HIPPO-KIND.
262
00:14:30,206 --> 00:14:31,827
IT JUST TAKES A LITTLE BIT
OF THEIR STRENGTH
263
00:14:31,827 --> 00:14:33,103
TO PUSH OFF THE BOTTOM,
264
00:14:33,103 --> 00:14:36,172
AND THEY CAN SOAR
THROUGH THE WATER.
265
00:14:36,172 --> 00:14:39,551
Narrator: THEY LOOK LIKE
GENTLE GIANTS IN THE TANK,
266
00:14:39,551 --> 00:14:42,172
BUT IN THE WILD,
SUPPORTED BY THE WATER,
267
00:14:42,172 --> 00:14:45,103
THEY USE THEIR IMMENSE
MUSCLE POWER TO GALLOP
268
00:14:45,103 --> 00:14:50,137
AND TURN THEMSELVES INTO
TERRIFYING KILLER TORPEDOS,
269
00:14:50,137 --> 00:14:51,413
A FEARSOME SIGHT
270
00:14:51,413 --> 00:14:55,000
FROM NATURE'S MOST UNEXPECTED
AQUATIC SPEEDSTER.
271
00:15:00,517 --> 00:15:04,551
COMING UP,
A GRAVITY-DEFYING REPTILE...
272
00:15:04,551 --> 00:15:07,344
AND A DEATH-DEFYING JELLYFISH.
273
00:15:18,517 --> 00:15:23,068
Narrator:
SOMEWHERE IN THESE MASSIVE
RAINFORESTS IN SOUTH AMERICA,
274
00:15:23,068 --> 00:15:26,517
THERE'S A HEAVENLY CREATURE
THAT'S PERFORMING MIRACLES.
275
00:15:26,517 --> 00:15:29,103
♪♪
276
00:15:29,103 --> 00:15:34,827
THE BASILISK. BETTER KNOWN
AS "THE JESUS LIZARD."
277
00:15:34,827 --> 00:15:37,379
WHY IS IT CALLED
THE JESUS LIZARD?
278
00:15:37,379 --> 00:15:40,413
BECAUSE THESE LITTLE GUYS
CAN WALK ON WATER.
279
00:15:40,413 --> 00:15:47,551
♪♪
280
00:15:47,551 --> 00:15:54,689
♪♪
281
00:15:54,689 --> 00:15:57,137
THERE ARE FOUR TYPES
OF JESUS LIZARD,
282
00:15:57,137 --> 00:15:59,344
AND THESE "HOLY"
REMARKABLE REPTILES
283
00:15:59,344 --> 00:16:02,241
CAN SCURRY ACROSS SURFACES
OF PONDS AND STREAMS
284
00:16:02,241 --> 00:16:06,137
FOR UP TO 15 FEET
WITHOUT SINKING.
285
00:16:06,137 --> 00:16:11,206
IS THIS DIVINE INTERVENTION
OR IS SCIENCE AT PLAY?
286
00:16:11,206 --> 00:16:14,758
HOW DO JESUS LIZARDS
WALK ON WATER?
287
00:16:14,758 --> 00:16:19,896
♪♪
288
00:16:19,896 --> 00:16:23,172
JESUS LIZARDS SPEND MOST
OF THEIR TIME IN THE TREES
289
00:16:23,172 --> 00:16:26,586
BUT ARE NEVER FAR FROM WATER.
290
00:16:26,586 --> 00:16:28,517
WHEN PREDATORS GET CLOSE,
291
00:16:28,517 --> 00:16:30,689
THEY'VE COME UP
WITH AN ALMIGHTY METHOD
292
00:16:30,689 --> 00:16:34,103
TO MAKE A WEIRD
BUT MIRACULOUS GETAWAY.
293
00:16:34,103 --> 00:16:38,758
♪♪
294
00:16:38,758 --> 00:16:40,206
JESUS LIZARDS ARE TOO HEAVY
295
00:16:40,206 --> 00:16:43,379
TO SKIM ON THE SURFACE
LIKE INSECTS.
296
00:16:43,379 --> 00:16:46,482
INSTEAD, THEY CHURN THEIR LEGS
LIKE WINDMILLS
297
00:16:46,482 --> 00:16:49,862
AT 5 FEET PER SECOND.
298
00:16:49,862 --> 00:16:54,379
AS THE FOOT STRIKES THE WATER,
THEIR LONG TOES SPREAD OUT,
299
00:16:54,379 --> 00:16:56,551
CREATING POCKETS OF AIR.
300
00:16:56,551 --> 00:16:59,655
GATHERING ENOUGH SPEED, THEY USE
THE TEMPORARY AIR POCKETS
301
00:16:59,655 --> 00:17:02,000
LIKE STEPPING STONES,
302
00:17:02,000 --> 00:17:05,068
PUSHING THEMSELVES FORWARD
ACROSS THE WATER.
303
00:17:05,068 --> 00:17:10,137
♪♪
304
00:17:10,137 --> 00:17:13,103
STRONG HIND LEGS
ALSO HELP THE BASILISK
305
00:17:13,103 --> 00:17:14,586
TO NOT ONLY RUN UPRIGHT,
306
00:17:14,586 --> 00:17:17,655
BUT TO LIFT THEIR FEET BEFORE
THE WATER PULLS THEM DOWN.
307
00:17:17,655 --> 00:17:19,034
[ STARTER PISTOL FIRES ]
308
00:17:19,034 --> 00:17:21,517
A HUMAN WOULD HAVE TO RUN
AT 65 MILES AN HOUR
309
00:17:21,517 --> 00:17:23,862
TO ACHIEVE THIS ALMIGHTY FEAT.
310
00:17:23,862 --> 00:17:26,793
♪♪
311
00:17:26,793 --> 00:17:31,413
SO, UNLESS WE START RUNNING
THE 100 METERS IN 3.4 SECONDS,
312
00:17:31,413 --> 00:17:35,344
WE'LL HAVE TO LEAVE THE MIRACLES
TO THIS LITTLE GUY.
313
00:17:35,344 --> 00:17:37,620
♪♪
314
00:17:37,620 --> 00:17:40,034
WHAT AN EXTRAORDINARY FELLOW.
315
00:17:43,310 --> 00:17:48,068
COMING UP, A JELLYFISH WITH
THE SECRET TO EVERLASTING LIFE.
316
00:17:57,689 --> 00:17:59,413
Narrator:
THE QUEST FOR ETERNAL LIFE
317
00:17:59,413 --> 00:18:03,413
HAS CAPTURED OUR IMAGINATIONS
FOR THOUSANDS OF YEARS.
318
00:18:03,413 --> 00:18:06,068
AND IT TURNS OUT YOU
DON'T NEED TO BE DOCTOR WHO
319
00:18:06,068 --> 00:18:09,068
OR A BLOODSUCKING VAMPIRE
TO LIVE FOREVER --
320
00:18:09,068 --> 00:18:12,689
JUST A JELLYFISH.
321
00:18:12,689 --> 00:18:15,206
THESE GLIMMERING CREATURES
BURST ON THE SCENE
322
00:18:15,206 --> 00:18:19,275
250 MILLION YEARS
BEFORE THE DINOSAURS.
323
00:18:19,275 --> 00:18:22,206
AND WHILE MOST JELLYFISH
LIVE AND DIE,
324
00:18:22,206 --> 00:18:27,206
ONE PARTICULAR SPECIES
CAN SKIP THE WHOLE DYING PART.
325
00:18:27,206 --> 00:18:31,862
THIS IS THE APTLY NAMED
IMMORTAL JELLYFISH.
326
00:18:31,862 --> 00:18:36,379
NOT ONLY DOES IT NOT DIE,
IT CAN ACTUALLY AGE BACKWARDS.
327
00:18:36,379 --> 00:18:40,241
AND WHEN IT GETS TOO YOUNG,
IT GETS OLD AGAIN.
328
00:18:40,241 --> 00:18:44,241
WHAT WE HAVE HERE IS A WHOLE
SPECIES OF BENJAMIN BUTTONS
329
00:18:44,241 --> 00:18:47,517
HOPPING BETWEEN BABY AND ADULT,
ADULT TO BABY,
330
00:18:47,517 --> 00:18:49,586
THEN BACK TO ADULT AGAIN.
331
00:18:49,586 --> 00:18:53,551
THE IMMORTAL JELLYFISH
JUST KEEPS ON NOT DYING.
332
00:18:53,551 --> 00:18:56,931
SO HOW DO JELLYFISH
LIVE FOREVER?
333
00:18:59,275 --> 00:19:00,724
THE IMMORTAL JELLYFISH IS FOUND
334
00:19:00,724 --> 00:19:03,344
IN NEARLY ALL
THE WORLD'S OCEANS.
335
00:19:03,344 --> 00:19:05,655
THEY START LIFE
THE OLD-FASHIONED WAY --
336
00:19:05,655 --> 00:19:09,275
A CLOUD OF SPERM RANDOMLY
COLLIDES WITH AN EGG FRONT.
337
00:19:09,275 --> 00:19:11,551
MOST WILL BE EATEN,
BUT IF THE FEW
338
00:19:11,551 --> 00:19:14,724
THAT MAKE IT TO ADULTHOOD
FACE INJURY OR STARVATION,
339
00:19:14,724 --> 00:19:19,000
THEY CAN BECOME YOUNG AGAIN
IN AN AMAZING WAY.
340
00:19:19,000 --> 00:19:20,517
THE IMMORTAL JELLYFISH
341
00:19:20,517 --> 00:19:24,517
TRANSFORMS INTO
A BLOB-LIKE CYST.
342
00:19:24,517 --> 00:19:27,000
THIS THEN SETTLES
ON THE SEAFLOOR
343
00:19:27,000 --> 00:19:30,000
WHERE IT DEVELOPS
INTO A POLYP COLONY,
344
00:19:30,000 --> 00:19:34,551
THE FIRST STAGE
IN JELLYFISH LIFE.
345
00:19:34,551 --> 00:19:37,793
IT'S LIKE A BUTTERFLY
CRAWLING BACK INSIDE THE COCOON
346
00:19:37,793 --> 00:19:41,379
TO BECOME A CATERPILLAR AGAIN.
347
00:19:41,379 --> 00:19:43,586
THIS POLYP COLONY CAN THEN SPAWN
348
00:19:43,586 --> 00:19:47,275
HUNDREDS OF GENETICALLY
IDENTICAL BABY JELLYFISH --
349
00:19:47,275 --> 00:19:51,103
PERFECT COPIES
OF THE ORIGINAL ADULT.
350
00:19:51,103 --> 00:19:53,965
IN JUST 30 DAYS,
THE REJUVENATED JELLYFISH
351
00:19:53,965 --> 00:19:58,137
ARE READY TO START
THE WHOLE THING OVER AGAIN.
352
00:19:58,137 --> 00:20:01,827
IN THEORY, THIS PROCESS
CAN GO ON AND ON AND ON
353
00:20:01,827 --> 00:20:06,241
AND ON AND ON AND ON FOREVER.
354
00:20:06,241 --> 00:20:09,482
NAMES VANISH,
CIVILIZATIONS FALL,
355
00:20:09,482 --> 00:20:11,793
BUT THIS JELLYFISH KEEPS ROLLIN'
356
00:20:11,793 --> 00:20:15,103
FOR THOUSANDS,
MAYBE MILLIONS OF YEARS.
357
00:20:15,103 --> 00:20:18,965
♪♪
358
00:20:18,965 --> 00:20:20,896
SCIENTISTS ARE NOW TRYING
359
00:20:20,896 --> 00:20:24,827
TO UNLOCK ITS SECRETS
TO IMMORTALITY.
360
00:20:24,827 --> 00:20:26,517
THEY HOPE IT WILL ALLOW US
361
00:20:26,517 --> 00:20:29,482
TO RENEW OUR DAMAGED
OR DEAD TISSUE...
362
00:20:29,482 --> 00:20:31,862
♪♪
363
00:20:31,862 --> 00:20:37,068
...SO PERHAPS ONE DAY
WE, TOO, WILL LIVE FOREVER.
364
00:20:37,068 --> 00:20:39,103
BUT BE WARNED --
365
00:20:39,103 --> 00:20:42,413
YOU MAY HAVE TO GO THROUGH
DIAPERS ALL OVER AGAIN.
366
00:20:42,413 --> 00:20:47,655
♪♪
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