What is this marine creature called?

I've caught plenty of them off the coast of Maryland. Always put them back. Kids would be so interested in them. Hard to believe that they are used for bait, never noticed much meat on them. I did read that their blood was blue and used in the medical field.

I think that they are so cool. They look prehistoric.

I've never seen these before and I thought it was some kind of Stingray with that shape & tail. And I can't imagine having 7 eyes!

I loved finding them swimming, eating, and mating off Cape Cod. One of the reasons I became a research scientist.

most of the sea life out there has blue blood crabs , scallops, lobster,ect

peppers, most of the sea life out there has blue blood crabs, scallops lobster ect

I have always liked these creatures. Too bad they are experiencing environmental stresses and pressures.

Vicki, you are right! They are very old on the evolutionary timeline!

peppers, wow!