looks like a giant sand crab to me. Gotta know what it is
Calico crab, also sand shrimp, silversides seining today. Brr!
Japanese shore crab. Many under jetty rocks for former RR pier Horseshoe Cove
On the mud flats of the Wakouaiti River estuary
The decapods or Decapoda (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crayfish, crabs, lobsters, prawns and shrimp. Most decapods are scavengers. The order is estimated to contain nearly 15,000 species in around 2,700 genera, with approximately 3,300 fossil species. Nearly half of these species are crabs, with the shrimp (c. 3000 species) and Anomura (including hermit crabs, porcelain crabs, squat lobsters: (c. 2500 species), making up the bulk...