Jellyfish have been drifting in our oceans for more than 500 million years.

Starfish can regenerate lost arms, and some can even grow a new body from one arm.

Pufferfish can inflate their bodies to scare off predators.

Male seahorses carry the babies in a pouch until they are ready to hatch.

Anglerfish use a glowing lure to attract prey in the dark ocean depths.

Whales sing songs that can travel for miles underwater.

Starfish can regenerate lost arms, and some can even grow a new body from one arm.

Whales sing songs that can travel for miles underwater.

Male seahorses carry the babies in a pouch until they are ready to hatch.

Jellyfish have been drifting in our oceans for more than 500 million years.

Anglerfish use a glowing lure to attract prey in the dark ocean depths.

Pufferfish can inflate their bodies to scare off predators.