Dall’s porpoises are opportunistic, hunting a variety of surface and mid-water species. Common prey are mesopelgic fish, such as myctophids, and gonatid squid. Stomach content analyses have also found cases of crustacean consumption, including krill and shrimp, but this is abnormal and likely not an important part of their diet. A previous study revealed that tagged Dall’s porpoises spent most of their time within 10 m of the surface, but have been recorded diving to depths of up to 94 m.
