It's a Portuguese Man O' War, or more commonly known as a blue bottle. They get swept onto the beaches by on shore winds. The tentacles sting really painfully. I once subbed under a wave while surfing and emerged with a whole clump of them on my face and head. Not an experience I ever want to repeat.Please explain to this landlubber what that actually is? Looks like an Alien from Outer Space.
-F_D