Emerita analoga (Stimpson, ). Common name(s): Pacific sand crab, sand crab, mole crab. Synonyms: Hippa analoga, 3 cm preserved female. Scientific Name. Emerita analoga. Animal Type. Invertebrates. Diet. plankton, mostly dinoflagellates. Size. females: to 2 inches ( mm); males inches. Pacific Sand Crab (Mole Crab). Emerita analoga. Decapoda: Hippidae. Laguna Beach, Orange County, CA. 06/11/ © Peter J. Bryant. Back to Natural History.

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Emerita analoga | Zooplankton Guide

This movement happens very quickly, allowing the crabs to gather food several times in one receding wave. Inhabit the swash zone where the waves sweep up the beach and then retreat again. Emerita is adept at burrowing, and is capable of burying itself completely in 1. Fishes, seabirds and shore birds are the main predators of sand crabs.

Emerita is a small genus of decapod crustaceansknown as mole crabssand crabssand fleassand fiddlers or sea cicada. Bulletin of Zoological Nomenclature. The wnaloga are on long stalks and the antennules are also elongated anaooga as to project above the surface of the sand.

Sand Crabs are known as an indicator species that can highlight poor environmental health in coastal ecosystems. Locations, abundances, unusual behaviors: The much longer antennae are retractable. In some cultures, sand crabs are eaten as a popular anaaloga, such as in Thailand and parts of India. Back to Natural History of Orange County, California Back to Crustacea index page A very common and familiar burrowing crab on sandy beaches in Southern California, showing some impressive adaptations for its sandy habitat.


The antennae are much bigger than the antennules, which are visible here in the center. Articles with ‘species’ microformats. The Old World species had been widely thought to form a monophyletic groupas did the New World species.

Ten species are recognised as of [update]: Retrieved from ” https: The Pacific sand crab is one of the few species specializing in the swash zone of wave-swept sandy beaches. The antennules form a tube though which water is directed downwards into the gill chambers.

Mating occurs mostly in spring and summer. This makes it vulnerable to predatory birds such as the sanderling.

Sand crab, Beaches & Dunes, Invertebrates, Emerita analoga at the Monterey Bay Aquarium

Although not very conspicuous, they are one of the most abundant animals on sandy beaches of Southern California. Cool Facts If dislodged while feeding, sand crabs—in a manner most unusual for crustaceans—can swim or tread water by beating their back legs.

Conservation Fishes, seabirds and shore birds are emfrita main predators of sand crabs. Her head, with its feathery antennae, is on the right.

Week # 5: Pacific Sand Crab, Emerita analoga

The Biology of Soft Shores and Estuaries. The legs and uropods have hairy analota to assist in digging and for use in collecting food and transferring it to the mouth. Tam; Irv Kornfield In essence, Sand Crab abundance helps scientists to understand ecosystem health at larger scales. Introductio ad historiam naturalem sistens genera lapidum, plantarum, et animalium hactenus detecta, caracteribus essentialibus donata, in tribus divisa, subinde ad leges naturae in Latin.


In Oregonthe populations seem not to be self-sustaining and recruitment is largely from larvae originating in California. Well camouflaged by its gray shell, a sand crab keeps its balance in the ever-moving sand with the help of a heavily armored, curved body and pointy legs.

The zoeal stages last up to days.

Emerita analoga

Emeriat Female Emerita analoga Scientific classification Kingdom: When water is overhead, they also project above the sand surface to collect food particles. Look carefully next time you are walking down the beach after the crash of a wave moves back to the ocean and you just might catch a glimpse of me while I am capturing food. This page was last edited on 19 Decemberat As a receding wave flows over them, the sand crabs analogx a second pair of featherlike antennae and sweep them through the water to filter out tiny plankton.

Journal of Crustacean Biology. The sand crab retreats under the sand surface as each wave goes out, maximizing its chance of being out of reach of the bird’s beak. Emerita has a barrel -shaped body.

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