What is "arca noae"

Noah's ark \No"ah's ark\, prop. n. The ship built by Noah according to God's command, as related in the bible.

2. (Zo["o]l.) A marine bivalve shell ( Arca No[ae]), which somewhat resembles an ark, or ship, in form.

3. A child's toy, consisting of an ark-shaped box containing many different wooden animals.

4. (Fig.) Anything having a wide and representative assortment of people or objects of a particular class; as, the bar scene in Star Wars was a Noah's Ark of almost every imaginable alien form..

Arca noae or the Noah's Ark shell is a species of bivalve mollusc in the family Arcidae. It is found in the Mediterranean Sea from low tide mark to a depth of .