The sailfish can raise and lower a large dorsal fin to herd fish into tight groups before striking.

There are more atoms in a glass of water than glasses of water in Earth's oceans.

Fact #2617 · Ocean

The giant amphipod thrives in extreme ocean depths.

Fact #1421 · Ocean

Certain marine mammals have thick blubber for insulation.

Fact #877 · Ocean

Dolphins have names for each other — they use unique whistles to address individuals.

Fact #3234 · Ocean

The giant squid can grow over 30 feet long.

Fact #1393 · Ocean

Blue whales can grow longer than 90 feet.

Fact #341 · Ocean

Sea otters wrap themselves in kelp to stay anchored while sleeping.

Fact #1267 · Ocean

Some species of octopus can change both color and texture.

Fact #343 · Ocean