KnowraRiver dolphinLinked fromLinked fromThe 5 pages that link to River dolphin, each with the reason it gives.All 5Broader topic 2Narrower topic 1Compared with 2Toothed whaleBroader topic: River dolphins show that toothed whales inhabit freshwater as well as oceans.OdontocetiBroader topic: They show that odontocete lineages include freshwater specialists.