Pinnotheres maculatus Directory References Discover Flags That Look Alike How Many Electoral College Votes Does Each U.S. State Have? What’s the Difference Between Hispanic and Latino? Presidential Debate Bingo ¡Viva México! 7 of History's Most Notorious Serial Killers The Rise of the Machines: Pros and Cons of the Industrial Revolution Contents Pinnotheres maculatus crab Learn about this topic in these articles:pea crabs In pea crabP. maculatus, with a range similar to that of P. ostreum, is found in the shells of scallops, clams, and mussels. P. pisum, found in European coastal waters, lives in mussel and cockle shells. Read More