Small sperm whale species share a diet

By Sarah Zielinski, 12:06 PM April 9, 2014

Herman Melville may have made the sperm whale (Physeter macrocephalus) famous with Moby Dick, but there are other good reasons why you may not be familiar with the huge predator’s smaller cousins, the pygmy and dwarf sperm whales (Kogia breviceps and Kogia sima). Though they inhabit wide ranges and depths of temperate and tropical oceans along continental shelves and slopes, they are rarely sighted.

Scientists didn’t even recognize that the two species were separate until 1966. The pygmy speci...

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