Home

学习内容

What’s the DEEPEST Living Thing? - Video học tiếng Anh

What’s the DEEPEST Living Thing?

选择学习模式:

Highlight:

3000 Oxford Words4000 IELTS Words5000 Oxford Words3000 Common Words1000 TOEIC Words5000 TOEFL Words

字幕 (49)

0:00How deep can animals really survive?

0:02Well, the deepest that a human's ever

0:04gone with a single breath is the world

0:05record free dive of 214 m. If you had

0:09scuba gear, we can barely reach 100 m

0:11deeper. Down here in the meopelagic

0:14zone, aka the twilight zone, sunlight

0:17fades and the pressure can rival the

0:19surface of Venus. Beyond a,000 m in its

0:22total darkness. Welcome to the

0:23baopilagic zone or the midnight zone

0:26where temperatures are near freezing and

0:28the pressure more crushing than a great

0:30white shark bite. Still, elephant seals

0:32dive this deep. Sperm whales even

0:35deeper. Though, it's the Kouier's beaked

0:37whale that earns the record for the

0:38deepest diving mammal. See, whales have

0:40these clever adaptations like lungs that

0:43collapse under pressure to prevent those

0:45gas- fil spaces from bursting. And they

0:47have high blood to body volume ratios so

0:49they can store more oxygen. But

0:51creatures that don't breathe air can go

0:52even deeper. At 4,000 m, you reach the

0:55abyssop pelagic zone or the abyss. It's

0:58home to animals like tripod fish, some

1:01octopuses and comb jellies. And finally,

1:04we reach the deepest part, the hayal

1:06pelagic zone. Here, strange snail fish

1:09push the limit of how deep a fish can

1:11go, about 8,300 m. thanks to an

1:13abundance of these molecules called

1:15pazolytes that keep the actual proteins

1:18in their cells from being ripped apart

1:20by the extreme pressure. But snailfish

1:22don't get this one off with the title

1:23just yet. It's shrimplike amphipods that

1:26absolutely crush record-breaking depths.

1:28They're found in challenger deep, the

1:30deepest point in the Mariana Trench.

1:32They coat the surface of their

1:34exoskeleton with aluminum gel to help

1:36them survive the harsh chemical

1:38environment at these depths. And while

1:41not a sea creature, this tiny nematode

1:43worm was discovered 3600 meters deep in

1:46Earth's crust, living inside rock.

1:49Definitely worth an honorable mention.