It is a deepwater species and is only found attached to the bones of dead whales.

In 1900, some fishermen trawling the seabed between the Hebrides and the Shetland Islands brought to the surface part of a whale skull to which was attached about twenty bivalve molluscs.

[2] Marshall determined that the molluscs were new to science, and formally described them, naming the new species Myrina simpsoni.

The dorsal margin is flat and the hinge simple; the shell is embossed with fine concentric sculpturing.

[2] A whale fall, the sinking of a dead whale carcase to the sea floor, creates a complex localized ecosystem that can supply sustenance to deep-sea organisms for long periods of time.