Commonly found on my beach, the Turkey Wing Ark Clam (Arca zebra) averages about 2 inches long and was named for its resemblance for a couple objects. The first part of the name I understand, with the brown and white stripes it does somewhat resemble an outstretched turkey wing.
The ark part is more of a reach for me. Apparently, the long flat section near the hinge reminded people of the deck of an old wooden boat, like Noah’s ark. Umm, yeah, I’ll have one of whatever those people were drinking!