"Mammals of the oceans"@en . "Mammals of the oceans" . "Hutchinson library of natural history" . "Studies the evolution, status, and distribution of marine mammals, their relations with predators and nonpredators, and the characteristics of all known species." . . . . . . . . . . "Mammals of the seas" . . . . . . . . . . . . . . . "Mammals." . . "Mamífers marins." . . "Marine animals." . .