Metacrangon munita, commonly known as the coastal spinyhead, is a species of caridean shrimp native to the northeastern Pacific Ocean.

The anterior median spine is much shorter than the posterior one and does not extend as far as the eye sockets.

The pale brown and whitish disruptive coloration as well as the spines and bristles on the carapace make it difficult to discern the features of this shrimp.

[2] This shrimp occurs in the northeastern Pacific Ocean, its range extending from Alaska southwards to southern California, its depth range being between 12 and 230 m (40 and 750 ft).

A parasitic isopod sometimes attaches to its gills.