Guardian Nature School Team Contact Blog Project Noah Facebook Project Noah Twitter

A worldwide community photographing and learning about wildlife

Join Project Noah!
nature school apple icon

Project Noah Nature School visit nature school

Porcelain Crab

Petrolisthes cinctipes

Description:

Despite its name and appearance, the Flat Porcelain Crab is not a crab at all. In fact, it is more closely related to the lobster, but through a process known as carcinisation has evolved to look like a crab. The chief difference is in the number of legs - Porcelain Crabs only have six walking legs while real crabs have eight. Why some marine creatures develop crab-like characteristics is still not completely understood by scientists, but it may an adaptation to living around and under rocks where the crab’s body shape and structure is uniquely suited. The animals unique name stems from the smooth texture and subtle colors of the carapace, which, when wet, often glistens like porcelain. These false-crabs can range in color from dark brown to sky blue.

Habitat:

Porcelain crabs are found in almost every ocean on Earth. Along the West Coast, they can be found from British Columbia to Santa Barbara, California. They are very common along the Oregon coast where the rocky environment makes a perfect habitat for them. Often they can be seen scurrying quickly over the sand or into the surf on the state’s various beaches.

Species ID Suggestions



Sign in to suggest organism ID

No Comments

Eva Varga
Spotted by
Eva Varga

Oregon, USA

Spotted on Jul 18, 2012
Submitted on Aug 29, 2012

Related Spottings

Flattop crab Flat Porcelain Crab Porcelain crab (juvenile) Porcelain crab

Nearby Spottings

Giant Green Anemone Ochre (Purple or Pacific) Sea Star Acorn Woodpecker (granary) Black Leather Chiton
Noah Guardians
Noah Sponsors
join Project Noah Team

Join the Project Noah Team