Deep-water, limpet-like molluscs. Exclusively marine.
Chitons. 8 plaits or valves, embedded in surrounding girdle.
Snails, slugs and nudibranchs. Marine, land and freshwater.
Tusk Shells. Exclusively marine.
Clams, Mussels, Oysters, Pipi. Marine and freshwater.
Octopus, Squid, Nautilus. Exclusively marine.
Starfish or Sea Stars. Usually star-shaped with a central disc, and five arms
Star-shaped echinoderms with a distinct central disc, and usually five slender arms.
Sea Eggs, Kina and Sea Urchins belong to the group Echinoidea.