The basking shark is the second-largest shark species in the world, and also one of the most unique. What makes it so cool?

Properly identifying coral can add another dimension to any reef dive. Today we’ll introduce encrusting corals of the Indo-Pacific and offer tips for identification.

You would think that with its stained-glass coloration, it would be easy to spot mandarinfish. But you’d be wrong.

Despite its name, black coral is rarely black. The moniker refers instead to the corals’ skeleton. Here are a few fun facts about this rare find.