Jingle Shell

Anomia ephippium

Anomia ephippium is a bivalve with concave, semi-transparent shells that exhibit hues ranging from orange to yellow and salmon-like colors. These shells can reach sizes of up to 6 cm and are characterized by a thin, brittle, translucent structure made of foliated calcite. Jingle shells are typically found attached to hard substrates such as stones or other shells, including oysters, using a muscle that passes through a large hole in the shell's under-valve region. This species thrives in sheltered environments within the low intertidal and sublittoral zones, inhabiting depths between 25 and 200 meters. They are widely distributed along coasts around the world, particularly on the South and West coasts of Britain, as well as all coasts of Ireland. In the United States, they can be found along the Atlantic Coast from Massachusetts to Florida, with notable occurrences in the Woods Hole region of Massachusetts. Anomia ephippium feeds by filtering plankton and other small particles from the water, attaching itself to surfaces with its byssus. Reproduction occurs through spawning during the summer months when gametes are released into the water column, leading to fertilization in the mantle cavity. The life cycle begins with embryos developing into free-swimming trochophore larvae, which later transform into bivalve veligers resembling miniature clams. Encountering this species while diving can be intriguing, as they often blend into their surroundings, requiring keen observation to spot them. The conservation status of Anomia ephippium is not evaluated, indicating a lack of specific data on its population trends.