Does any zoologist know what this is?

It's the ventral (belly) view of a Horseshoe Crab. This is a very primitive species of crab that's still alive today. They have existed since before the Dinosaurs. It is really not that unusual to see them nowadays.

Well it is not a fish. Some kind of arthropod, maybe deep water crab. Looks similar to a horseshoe crab. I can assure everyone it is NOT a horseshoe crab.

Would be helpful if there was some info to go with the picture.

I know it but forgot its name its that kind of crabby the common name is horse shoe crab or something

by the way its upside down

Looks like a type of king crab.

easy peasy - thats a horseshoe crab on its back

that is one ugly dead fish. maybe a coelacanth mutant or something.

EEEUUUUUUUUUUU.......

That's such an ugly fish.