Squid, Octopi & Cuttlefish all have shells. The shell may either be internal or very, very reduced, indicating an evolution from the dependence of a protective shell like the chambered nautiluses that has existed for millions of years.
Sea creature catalog
cartilage animals - Google zoeken
Sea Life - Smalltooth Sawfish, Southern Stingray, Atlantic Torpedo, Skate, Eagle Ray - Vintage 1984 Fish Book Plate
Dolphin Species | See also: Marine Life Tattoo Index , Nautical Tattoos , Killer Whales ...
The first three are a bit off with their relative scale, but still a cool chart!
marjoleinhoekendijk: golden-quill: Black Silk - source
rhamphotheca: Incredibly rare WHITE humpback whale spotted off coast of Norway by Niamh O’doherty A white whale has been causing a splash...