The first annual “Big Blue” international freediving competition is set for November 1-9, 2015.

For his work documenting fish for the Census of Marine Life and his dedication to conservation, Rick Morris is our September/October 2015 Sea Hero.

For his work with Ocean Defenders Alliance protecting California's oceans, Kurt Lieber is Scuba Diving magazine's November/December 2015 Sea Hero.

When science has a problem, history shows nature has severed as inspiration to solve it. Learn how engineers looked to the powerful seahorse tail to guide them in designing a robotic arm.

Looking for a great children's book? Eric Douglas — author of Lessons for Life — just released his latest story for kids: "Sea Turtle Rescue and Other Stories!"

Check out this gallery to learn what 10 things are deadlier than sharks, and why sharks aren't the mindless killing machines they're made out to be.

Can you say airplane graveyard? New wrecks around the world are popping up all over the place — and they've got quite a bit of history to them.

Hammerheads have been spotted off the coast of Florida — but it's not what you think.

Researchers from CSIRO and Imperial College London have assessed how widespread the threat of plastic is for the world's seabirds and found the majority of species have plastic in their gut.