Rays

What is the Difference Between Skates and Rays
Most rays are kite-shaped with whip-like tails possessing one or two stinging spines while skates have fleshier tails and lack spines. ... Skates have...
internal structure of cartilaginous fish
Cartilaginous fish such as sharks, skates, and rays are vertebrates whose internal skeleton is made entirely of cartilage and contains no ossified bon...