The body of a crustacean is composed of segments, which are grouped into three regions: the cephalon or head, the pereon or thorax, and the pleon or abdomen. The head and thorax may … See more

Mating system
Most crustaceans have separate sexes, and reproduce sexually. In fact, a recent study explains how … See more

Crustaceans have a rich and extensive fossil record, which begins with animals such as Canadaspis and Perspicaris from the See more

• Crustaceans portal
• Pain in crustaceans See more

Most crustaceans are aquatic, living in either marine or freshwater environments, but a few groups have adapted to life on land, such as terrestrial crabs, terrestrial hermit crabs See more

The name "crustacean" dates from the earliest works to describe the animals, including those of Pierre Belon and Guillaume Rondelet See more

Many crustaceans are consumed by humans, and nearly 10,700,000 tons were harvested in 2007; the vast majority of this output is of See more