The most interesting facts about parrotfish, including their diet, size and production of sand.

What it's like to witness a giant manta while hanging in the open ocean for decompression obligations.

Sharpen your coral identification skills with these tips on how to ID grooved brain coral.

Hundreds of cuttlefish gather near Whyalla, South Australia, each year to mate in the world's largest cuttlefish aggregation.

Is the megalodon extinct? Here's what shark experts are saying about the movie "The Meg," which features an extinct prehistoric shark, megalodon.

Rob Stewart, a scuba diver and shark conservationist who died in a 2017 dive accident, will leave a legacy through the upcoming film Sharkwater: Extinction.

Scientists from the California Academy of Sciences invented a tank to help bring fish up from great depths.