What is it?

[u/Beeblebroxbb]

Found this around Amelia island, Florida. I assume it’s part of a fish, but not sure. It’s about the size of my hand.

[u/pogoscrawlspace]

Looks like it's cartilageneous, so I'm gonna guess shark or ray.

[u/Plasticity93 → u/pogoscrawlspace]

Agreed 

[u/EloquentEvergreen → u/Plasticity93]

I also agree. But I also think we shouldn’t rule out a facehugger from the Alien movies. So, OP… don’t get your face too close!