The National Oceanic and Atmospheric Administration has received a petition from a fishing group asking that the northwest Atlantic Ocean's leatherback sea turtles be listed as threatened.

DoE says regulations protect a number of species, including sharks and Nassau grouper. The 17th annual Grouper Moon Project will be undertaken in early 2018.

A team of shark researchers will begin their expedition off the coast of Jacksonville, Florida.

Underwater videographer Becky Schott comes face-to-face with great white sharks in South Australia.

Cold-stunned sea turtles wash ashore in Florida and Texas after the water temperature falls below 50 degrees Fahrenheit.

Check out these fun facts about the always-interesting walrus, a marine mammal that scuba divers might spot in Norway or near the Arctic.

Can cage diving in the famous Isla Guadalupe region be a peaceful experience for divers? One diver sure thinks so — and he has the video to prove it.