Killer whales, cuddly otters, and jogging shrimp are great reasons to be excited about marine biology. But they are far more than a source of inspiration or entertainment. Each fascinating creature should remind us that a precious realm exists just beneath the surface of the sea, and it is our responsibility to protect it from overfishing and pollution.

Here are some of our favorite clips from that remarkable world:

10. Octopus Escapes Through One Inch Hole

9. Manatee Crash

8. Flying Great White Shark

7. Shrimp on a Treadmill

6. Otters Holding Hands

5. TED talk by David Gallo

4. Deep Sea Squid with Elbows

3. Massive School of Jellyfish

2. Orcas Hunting by Making Waves

1. Mimic Octopus

Image: A glowing fish from David Gallo's TED talk.

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