Crustacean - Wikipedia, the free encyclopedia
The crustaceans include various familiar animals , such as lobsters, crabs, shrimp and barnacles .
http://en.wikipedia.org/wiki/Crustacea

A closer look to one sanctuary
In this Investigation, students take a closer look at Stellwagen Bank National Marine Sanctuary.
http://www.nationalgeographic.com/seas/html/classroom/pdfs/1_inv2.pdf

Crustaceans
Some researches consider that the group Crustacea should have its own phylum, called Crustacea.
http://www.mesa.edu.au/friends/seashores/crustaceans.html

Microscopic fresh water crustaceans
Which crustaceans can be finded in fresh water?
http://www.microscopy-uk.org.uk/mag/indexmag.html?http://www.microscopy-uk.org.uk/mag/wimsmall/crust.html

Sea and Sky: Crustaceans Page 1
The world of the crustaceans is a world of bizarre shapes and adaptations
http://www.seasky.org/reeflife/sea2e.html

Wonders of the Sea: Crustaceans
Oceanside Meadows Innstitute for the Arts and Sciences presents crustaceans, a class of antropods .
http://www.oceaninn.com/guides/crustacea.htm