👉 A molluscoid is a type of shellfish, usually smaller than 10 cm in length. They are characterized by their unique shape and texture that can vary from smooth to rough and irregular. Mollusks are often referred to as "shellfish" because they have a hard outer shell that forms the body and cover the inside of the shell, which is called the mantle. The mollusk's shell is made up of a series of spongy tissues known as a mesop