Dall's Porpoise somewhat resemble mini-orca's, growing to a mature size of up to 8ft in length weighing in under 500lbs. They live an average of 15-20 years. A key feature is their white-sided dorsal fin. They're considered the fastest swimmers in their family reaching speeds of up to 30 knots (34mph).
Dall's porpoise have been known to mate with harbor porpoises.
Dall's porpoise eat anchovies, herring, hake, smelts, squid, octopus, and occasionally crabs and shrimp.
They can be found in Alaskan salt water south of the mid-Bering Sea.