Crustaceans

People with aquariums have been collecting strange-looking crabs called "vampire crabs" for years. Now, researchers know where these crabs came from.

Animals tend to evolve toward a larger body size over time, and marine animals are no exception, a study suggests.

Despite booming adult populations, young lobster numbers are nearly half of what they were in 2007.

A new crayfish, Gramastacus lacus, discovered in southeast Australia's coastal lakes is one of the world's smallest examples of the species.

Alien species become invasive when their introduction to an ecosystem ends up causing ecological disruption in their new home.

A 520-million-year-old sea creature has been unearthed in Greenland. The ancient Cambrian organism used its comblike appendages to rake the seas for tiny shrimplike foods,