An amazing photo gallery of whale sharks — the biggest fish in the sea — from around the world.

Two freedivers jump in the water to help save an entangled sea turtle. You won't want to miss what happens next.

Have you ever heard of a mantis shrimp? Watch as comedian Ze Frank narrates this True Facts video on mantis shrimp.

Breaking ground in underwater research: A female squid weighing over 700 pounds was recently found near Antarctica, take a look!