The common guitarfish, with a body shape that blends shark and ray, buries itself in sand to ambush prey; its Mediterranean populations have dropped by more than 80% due to trawl fishing.
What defines this group — Sharks & Rays
The cartilaginous fish: not a single bone in the body, a skeleton made entirely of cartilage.
A cartilage skeleton, lighter and more flexible than bone.
No gill cover: five to seven gill slits open on the sides or underneath.
Pores on the snout — the ampullae of Lorenzini — pick up the electric field of prey.