Humans have only explored a tiny percentage of the seafloor, so there's a good chance some of the strangest creatures or ...

This unique footage shows what it's like to swim with hundreds of hammerhead sharks. The video shows the waters off the coast of Japan saturated with sharks. The amazing footage was taken by Lorien ...

Endurance swimmer and ocean advocate Lewis Pugh joins Morning Joe to discuss his 12-day, 62-mile swim around Martha's Vineyard to raise awareness around sharks.