Science Drone footage reveals "Tornado Rip" vortex invisible from the shore Popkin

animals Watch a sea anemone defend itself against a predatory starfish in this incredible video Popkin

ocean Glowing starfish larvae transform oceans into underwater galaxies Popkin

Science Inside a diving bell: explore the ocean floor without scuba gear Popkin

ocean Terrifying footage shows cruise ship vs Drake Passage's monster waves Popkin

ocean Brothers find message in a bottle from 1976 — leads to unexpected reunion Popkin

norway A drawing of a sea serpent "witnessed" near Norway in 1753 Popkin

Nature Cuttlefish use chromatophores, iridophores, and leucophores to blend in seamlessly Popkin

Nature Beachcomber shares his recipe for making sea salt Popkin

Delightful Creatures Hairy frogfish has a built-in fishing pole Popkin

viral videos When your beach day turns into a live-action "Tremors" sequel Popkin

video Animation shows how rip currents can pull you out to sea Popkin

Science Ominous shelf cloud looks like tidal wave rising above houses Popkin

whales Watch wild moment when humpback whale launches out of the water on top of a wingsurfer (video) David Pescovitz

music The sea organ is a unique instrument powered by ocean waves Popkin

Technology The Titanic tourist sub that is now missing used "improvised" technology; it was steered by a game controller Ruben Bolling

ocean Listen to this collection of creepy unexplained sounds Mark Frauenfelder

Nature Witness the spectacular sight of 64,000 sea turtles captured on drone footage Popkin

ocean This is Aber-clam Lincoln, a huge clam that's been alive for more than 200 years David Pescovitz

animals Watch: Sea turtle flips the odds in a fight with a tiger shark David Pescovitz