Bay Shore Crab

Hemigrapsus oregonensis

The square-shaped Bay Shore crab is a common intertidal resident. It lives in the quiet, brackish waters of San Elijo Lagoon, coming out to feed mainly at night. Its body is usually yellowish or grayish-green, though it may also be dark reddish-brown with green spots. Its four posterior legs are conspicuously hairy. It grows to just over an inch long.

Fun Fact:
This tough little crab can tolerate lower salinities and murkier waters than most other shore crabs.

What’s for Lunch:
Mostly algae but occasionally snails and mussels

Where’s Home:
Crevices or burrows in tide pools