The body is dark brown or gray, with a cylindrical shape that ... For instance, the common frilled shark has shorter gill slits, and its Southern African counterpart has both longer gills and ...

Angel sharks are various shades of white, gray, brown and black ... A minimum size limit set in 1989 and inshore gill net ban in 1994 helped the Pacific angel shark population mostly recover ...

Sand tiger sharks, also known as gray nurse sharks ... Sand tigers are the only shark known to come to the surface and gulp air. They store the air in their stomachs, which allows them to float ...