It can be found embedded in firm muddy intertidal sediments, seagrass beds, and reef flats along continental and island shores.

P. bicolor have thin, elongated triangular shells that narrow to a point and range in color from light yellow-brown to dark brown.

[2] This earns it the moniker of "razor clam" in Australia due the danger these strong shells pose to waders and their abundance at low tide.

[6][3] It also inhabits tropical zones from 35oN-37oS and 29oE-154oW; occurs from the south and eastern African coasts, Madagascar, the Red Sea, the Persian Gulf and India, as well as spanning from Japan to southern Australia and the whole East Indies.

[1] They sit partially embedded in firm muddy intertidal sediments, in seagrass beds, and atop reef flats along continental and island shores at depths of up to 50 m (160 ft).

[1] P. bicolor is an important species in marine ecosystems that have significant impact for other lifeforms, as they prove to be both a habitat and food source.