What is this thing we found while hunting for seashells today with the kids?

We found 4 of them together. Here is a picture:





http://i19.tinypic.com/6h44t8w.jpg





I THINK that is a tail, not a mouth (because it doesn't appear to have a jaw). It is small, about as long as my hand.





Found all four washed up in the Atlantic in Eastern Canada (so starting to get chilly as it is fall)... if that helps at all?What is this thing we found while hunting for seashells today with the kids?
It looks like a piece of exoskeleton from some sort of crustacean - like the lower piece of a pincher. Did all 4 look exactly like that?





Edit --





Unless the angle is throwing me off, it looks like the upper portion of it is a hollow 'tube' like thing - which means it is 100% NOT a jaw.





See picture for reference:


http://www.secrab.eu/cbairdi.jpgWhat is this thing we found while hunting for seashells today with the kids?
It appears to be the jawbone of a bottlenose dolphin.
It looks like a piece of coral maybe.. or it could be a jaw. It certainly looks more like a jaw than a piece of coral.
It is a crab claw or chela it is the lower part known as a propudus with the top half the dactylus removed.
it's part of a jellyfish