Only oysters of the Ostreidae family can make pearls, but many other types of mollusks can produce these gems, such as ...

DESCRIPTION: White abalone are ocean-dwelling mollusks with a thin, oval shell that is red or brown on the outside and a variety of iridescent colors, particularly white and pink, inside. They grow to ...

A savored delicacy for sea otters and native coastal people alike, these hard-shelled marine snails were prized for the iridescent colors and the occasional pearl found inside their shells. Like most ...