Phaxas pellucidus, the transparent razor shell, is a species of marine bivalve mollusc in the family Pharidae.

It is found buried in the seabed in coastal waters of northwest Europe, often in great numbers.

[3][4] Pharus legumen is a somewhat similar species but it can be distinguished by its larger size and more cylindrical outline and the differences in the hinge teeth.

[4] It is a filter feeder and extends its siphons to the surface to circulate water through its mantle where it extract food fragments.

[1] Studies in Liverpool Bay show that where the sea bed has been disturbed by dredging and deposition of further sediment has occurred, P. pellucidus and the polychaete worm Lagis koreni often come to dominate the community, which includes another bivalve, Abra alba.