Sun-dried, the remains of a skate repose on that great depository of all things, the beach, Jamaica Bay branch. This may be the Little or Common Skate, Leucoraja erinacea. Cartilaginous like their relatives the sharks, skates reproduce by laying eggs, unlike their near look-a-likes the rays, who bear live young. Rays also have longer, more whip-like tails, with those dangerous stinging spines. There are no poisonous spines on skate tails. And rays are generally tropical. The underside of another dead skate further along the beach. I assume I’ll meet death with a similar expression.
Oddly, I don’t seem to have a photo of a skate egg case, those black-brown “mermaid’s purses” with two stiff arms on each side, that I’ve been finding along the beach for, um, 40 years or so, but here’s a drawing by Marion Appel to remind you: