Common name : tree oysters, black-lip pearl oyster, penguin wing-oyster

Aspect : thin, compressed, and fan- or wing-shaped; the right valve featuring a prominent anterior byssal notch for attachment; The hinge line is straight and usually toothless or with small denticles; the inner shell is lined with nacre (mother-of-pearl), giving it an iridescent sheen; reaching up to 20 cm in length

Feeding : filtration of microorganisms in suspension (phytoplankton, zooplankton, detritus, and organic particles)

Environment : inhabit warm, tropical to subtropical marine waters, predominantly in shallow littoral and sublittoral zones of continental shelves (0–80 m depth, occasionally deeper up to 600 m); attached via a strong byssus (byssal threads) to hard or flexible substrates such as rocks, coral, gravel, shells, seagrasses, algae or gorgonians