The Mediterranean mussel (scientific name: Mytilus galloprovincialis) is a species of shellfish in the genus Mytilus. It is an invasive species in many parts of the world, but is also a common species in aquaculture. The Invasive Species Expert Group (ISSG) of the International Union for Conservation of Nature's Species Survival Committee is listed as one of the world's top 100 invasive alien species.

Common names for turtle feet: Buddha's Hand Shell, Stone Snail, Dog Claw Snail, Turtle Feet, Chicken Crown Shell, Chicken Feet, Chicken Feet, Guanyin Palm. The body is divided into a head and a handle, generally 2-3 centimeters wide and 3-5 centimeters high. The head is light yellow and green in color. The handle is soft and brown or yellow brown in color, with small calcareous scales arranged tightly on the surface. The largest individual has a head width of up to 44 millimeters, a height of 27 millimeters, a handle width of 25 millimeters, and a length of 15 millimeters. The head is flattened on the side, and the shell chamber is formed by 8 shell plates including the rib plate, back plate, upper side plate, peak plate, and kiss plate. The base has a row (21-31) of small side plates that rotate.

Common names for turtle feet: Buddha's Hand Shell, Stone Snail, Dog Claw Snail, Turtle Feet, Chicken Crown Shell, Chicken Feet, Chicken Feet, Guanyin Palm. The body is divided into a head and a handle, generally 2-3 centimeters wide and 3-5 centimeters high. The head is light yellow and green in color. The handle is soft and brown or yellow brown in color, with small calcareous scales arranged tightly on the surface. The largest individual has a head width of up to 44 millimeters, a height of 27 millimeters, a handle width of 25 millimeters, and a length of 15 millimeters. The head is flattened on the side, and the shell chamber is formed by 8 shell plates including the rib plate, back plate, upper side plate, peak plate, and kiss plate. The base has a row (21-31) of small side plates that rotate.