I found this a couple years ago when I was working on Padre Island National Seashore (not my favorite place in the world). It was buried pretty deep in the sargassum seaweed. I can't seem to figure out what it is. Guessing something cetacean oriented, maybe inner ear related. But..I dunno. Pictures online didn't really mesh with that idea too well. One day I'll find out. I should bring it into the marine department at HSU here. Yes, that's what i should do.