tun shell
gastropod family
Also known as: Doliidae, Tonnidae
Quick Summary
A tun shell is a type of marine snail belonging to the family Tonnidae. These gastropods are characterized by their spiral shells, which are also referred to as tun shells. Gastropods, in general, are a class of mollusks that possess a muscular foot for locomotion, a head with sensory organs, and a visceral hump containing their internal organs. Many gastropods, like the tun shell, have an external shell secreted by a fleshy layer called the mantle. The shell provides protection and can be withdrawn into for safety.1
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