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The zoology of whales and related aquatic mammals.

[Latin cētus, whale; see Cetus + -logy.]

ce′to·log′i·cal (sēt′l-ŏj′ĭ-kəl) adj.
ce·tol′o·gist n.
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Asha de Vos (Sri Lanka) - Blue whale scientist Sri Lankan cetologist, oceanographer, and PhD candidate studying the unique and unusual population of non-migrating blue whales found only in the Northern Indian Ocean
The photographs are copious and fascinating, including electron microscope views of hideous mite larvae and a shot of the inebriated cetologist poking at a whale carcass.