Solemya borealis , the boreal awning clam, is a species of saltwater clam, a marine bivalve mollusc in the family Solemyidae the awning clams.

This species is found along the northeastern coast of North America, from Nova Scotia to Connecticut.

[1] S. borealis belong to the Petrasma subgenus; being characterized by having an elongated oval shell with parallel ventral and dorsal margins.

Individuals may reach a length of 8 to 10 cm and have a periostracum of dark brown color.

Nutritionally, S. borealis contains concentrations of chemoautotrophic bacteria in inner gill filaments, symbiotically attached to the host.