KnowraHarbour porpoiseLinked fromLinked fromThe 4 pages that link to Harbour porpoise, each with the reason it gives.All 4Broader topic 2Compared with 2PorpoiseBroader topic: It is a widespread, familiar example of the family.Harbor sealCompared with: It shares coastal waters with harbor seals but is a cetacean, not a pinniped.Oceanic dolphinBroader topic: Its blunt snout and spade-shaped teeth help distinguish porpoises from dolphins.Dall's porpoiseCompared with: Its smaller size and less dramatic coloration help distinguish it from Dall's porpoise.