Marine Life

Consider the lobster feces: a new discovery about a midgut membrane and how lobsters consume toxic sea nettles could help develop more sustainable farming practices.

By Christopher Hassiotis

Despite its cartoonish visage, yes, this is a real animal. This recently spotted stubby squid was so charming he inspired poetry.

By Christopher Hassiotis

A Massachusetts fisherman recently caught a blue lobster, which had us wondering how rare this crustacean really is.

By Kathryn Whitbourne

Western Australia Museum is hosting a naming contest for this fascinating new nudibranch species.

By Christopher Hassiotis

Scientists until recently believed Octopuses & Co. were colorblind. If that were the case, how could the animals create such vivid physical color displays?

By Jesslyn Shields

Baby fish rely on jellyfish to protect them from predators, but that delicate symbiosis is at risk as seawater CO2 levels rise due to human actions.

By Christopher Hassiotis

Corals reefs have had a rough last few decades, but researchers have discovered a few reefs that are doing better than expected. And they're eager to learn why.

By Jonathan Strickland

How can a rich ecosystem exist beneath water as muddy as that of the Amazon River's plume? The surprising discovery all has to do with physics and density.

By Jesslyn Shields

And that price is a tapeworm infection.

By Robert Lamb

The sea butterfly snail moves in Arctic waters in the same way as fruit flies through tropical air. This case of convergent evolution was uncovered by a new study.

By Christopher Hassiotis

Whether they're busting open a child-proof medicine bottle or prying apart Mr. Potato Head, octopuses have some crazy brains. Actually, they have nine of them.

By Julia Layton

The Mariana Trench is the deepest place on Earth, and we're still in the dark about much of the life that calls it home. Here are just a few of the trench's eye-popping residents.

By Nathan Chandler

Beautiful, graceful, majestic: Such highfalutin words might seem befitting of a mermaid, but a manatee? Perhaps our humble friends deserve a bit more credit. After all, they are known to stoke the imagination of a lonely seafarer or two.

By Kate Kershner

Unless you've butchered an octopus, you might assume that it's as red-blooded as you are. And you'd be wrong. Why are octopuses the original blue bloods?

By Laurie L. Dove

Do you think much about the lobster before you crack it open and dip it in butter? These humble animals have some very odd habits. For one thing, they pee out of their faces.

By Shanna Freeman

Ah, the secrets of the sea. In this gallery, we'll introduce you to some of the more enigmatic animals that drift in the ocean, swim in the sea or shoot their intestines out of their anus in saltwater. Jump in.

By Kate Kershner

The duckplatypus is an amazing animal. Learn about the duckplatypus.

The death adder is native to Australia, New Guina and nearby islands. This relatively short, stocky snake has a triangular head, tapering tail and long fangs, the longest of any Australian snake.

A friend of mine gave me a package of Sea Monkeys as a gag gift for my birthday. I grew them, and they look nothing like the package but they really are alive! What are these things?

You're going on vacation to a place where jelly fish stings are a common occurrence and you want to know how to treat a jellyfish sting. This article will tell you how to treat a jellyfish sting.

By HowStuffWorks.com Contributors

Can a dead stingray's sting kill you? It's highly unlikely, but you'd still be in for a world of hurt if you get stung.

By Josh Clark

When we say someone is as slippery as an eel, it's not a compliment. But maybe eels get a bad wrap. They're slimy, but they have their reasons.

By Debra Ronca

Imagine that someone is pursuing you down a dark alley. Do you run? Duck behind a trash bin? The mimic octopus doesn't sweat this kind of scenario: It just shape-shifts to disguise itself. You'll be surprised by the tricks it's got up its tentacles.

By Cristen Conger

As you observe jellyfish twirl underwater, it's difficult not to be mesmerized by their graceful movements. But if their tentacles touch your skin, you'll regret being anywhere near these gelatinous blobs.

By Jennifer Horton

Giant squid are aggressive creatures that prey on almost anything that comes their way. How big do these monsters of the sea get, and could they really take down a watercraft?

By Maria Trimarchi