There are more than 52,000 species of Crustaceans in the world which include popular marine animals like lobsters, crabs, shrimp, crayfish and barnacles. Smaller crustacean breathe through their bodies and larger ones breathe through gills.
Box Jellyfish: World's Most Venomous Sea Creature
Stinging 'Sea Lice' Invading Atlantic Beaches
Jellyfish Don't Have Brains, But They Still Sleep
Giant African Land Snails Invade South Florida Again
The Cone Snail Is a Slow, but Highly Venomous, Predator
The Tiny Blue-ringed Octopus Is the Ocean's Deadliest
How Do Eels Reproduce?
Sailfish Are Super-fast, Stunning and Smart Ocean Predators
The Deep Ocean Giant Isopod Looks Like a Huge Roly-poly Bug
Cymothoa exigua will make you feel very glad you're not a fish.
These brightly colored crustaceans can smash aquarium glass or quickly cut through a human finger, so whatever you do, keep your distance.
The first-ever deep-sea exploration of West Java seas netted more than 12,000 marine creatures, including some new species of crabs, prawns and lobsters.
By Oisin Curran
To boil or not to boil ... that is the question.
By John Donovan
Scientists have discovered for the first time that animals pollinate flowers in the ocean.
By Alia Hoyt
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.