To rebuild coral reefs quickly, just add electricity

7 monuments, cities and world treasures we could lose to rising sea levels

World's largest sea sponge discovered in marine national monument

Tiny tuna crabs are invading the beaches of California's Monterey Bay

This deep sea fish uses its fins to walk around

Rare video of a blue whale feeding close to shore in California

Submersible crew shocked by images of giant alien-like deep sea creature

Native people built seashell islands off Florida

Gray whales swim through kelp in this zen-inducing video

Coral reef larger than Delaware discovered in muddy Amazon waters

15 things you didn't know about manatees

5 reasons to pay attention to those dismal coral bleaching headlines