The Dumbo octopus, named for its ear-like fins, lives at depths of up to 13,000 feet.

Some volcanoes can erupt underwater without anyone noticing.

Fact #2248 · Ocean

Some deep-sea jellyfish emit flashes of light when disturbed.

Fact #1396 · Ocean

Octopuses can squeeze through tight spaces due to their soft bodies.

Fact #869 · Ocean

Sea otters use rocks consistently as tools.

Fact #1304 · Ocean

Deep-sea coral reefs exist without sunlight.

Fact #1412 · Ocean

The anglerfish uses a bioluminescent lure to attract prey in the dark ocean depths.

Fact #1383 · Ocean

Octopuses have demonstrated short-term and long-term memory.

Fact #1319 · Ocean

Dolphins use echolocation to navigate and hunt underwater.

Fact #12 · Ocean