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crustaceans

Crustacean
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Crustacean

Crustaceans are a 30,000-species subgroup in the phylum Arthropoda. Like other arthropods, crustaceans have external skeletons. They have pairs of antennas, compound eyes, and legs on each body part.

Crustaceans are aquatic and most live in saltwater. They can swim or float freely (a crab), live anchored in place (a barnacle), or act as a parasite (the tongue-eating louse)!

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Bill Shear, Biologist: How Arthropods Left the Sea

Bill Shear, Biologist: How Arthropods Left the Sea

Biologist Bill Shear conducted painstaking research to determine how arthropods — which include crustaceans, insects, spiders, and centipedes — made the transition from sea to land. What did he find out? More...

Profile
Shape of Life
Coral Reef Crustaceans

Coral Reef Crustaceans

The coral reefs off the Andaman Islands in the Bay of Bengal are home to some of the planet’s most colorful and unusual crustaceans. Meet Technicolor spiny lobsters, hinged rock-cleaner shrimp, and a frantic, territorial red swimming crab in this video. More...

Video
Bubblevision
Crabs, Shrimp and Krill

Crabs, Shrimp and Krill

Crabs, shrimp, and krill make up a large part of the world’s crustacean population. Check out these facts, images, and videos. Don’t miss the video about killer shrimp. They may be tiny, but they’re trouble. More...

Video
BBC
Crustacea: Pictures, Video and Audio

Crustacea: Pictures, Video and Audio

The sights and sounds of hundreds of worldwide crustaceans are at your fingertips, courtesy of the Encyclopedia of Life. Be sure to read the bios that go with each creature. More...

Images
Smithsonian
Crustacea: Shrimps, Crabs, Lobsters, Water Fleas, and Relatives

Crustacea: Shrimps, Crabs, Lobsters, Water Fleas, and Relatives

There are so many different kinds of crustaceans, it’s hard to keep them all straight. Read about their varied characteristics, then click on the Pictures tab to get visuals on all this diversity. More...

Article
University of Michigan
Crustacean Games and Videos

Crustacean Games and Videos

Try one or try them all! Take your pick of 15 crustacean-themed games and videos. If you get stuck on one, just move on to the next. More...

Game
Learning Games for Kids
Lobster Removing His Shell: Video

Lobster Removing His Shell: Video

It’s a struggle that takes six minutes to watch, but it’s worth checking out this video to see a blue lobster work its way out of its gnarly, too-tight shell. The soft, new exterior will harden over time. More...

Video
Penang Channel
Red Crab Marathon

Red Crab Marathon

Before mating, red crab males on Christmas Island make a 5-mile trek to the ocean for a restorative dip. On the way they may dry out, get squashed by a car, or face attack by acid-spewing yellow crazy ants. Watch their journey! More...

Video
National Geographic
The Tongue-Eating Parasite

The Tongue-Eating Parasite

Do you like gross science? If so, you’ll love Cymothoa exigua, a crustacean that fits in the mouth of fish and eats the fish's tongue and sucks its blood. More...

Video
NOVA/PBS
The Ultimate Crustacean Quiz

The Ultimate Crustacean Quiz

Crustaceans are diverse and numerous, just like the questions in this quiz. (Hint: Take a look at some of the other resources on this page before you tackle it.) More...

Interactive
HowStuffWorks
What Is Home Sweet Home to a Sowbug?

What Is Home Sweet Home to a Sowbug?

Round up some sowbugs or pillbugs, find some empty milk cartons or deli containers, and perform this cool experiment to determine the fave microenvironment of these tiny, terrestrial crustaceans. More...

Activity
Science Buddies

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