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Well, this got ignored. Seeing as how sperm whales are considered ""great whales"" and at least three of the species of baleen whales aren't considered great whales, I removed the term from the lead. I don't really consider Omura's whale ""great whales"" either, as they don't get to 40 ft (arbitrary, yes) and weren't an important component of commercial whaling (the two species of minke, although important commercially, are too small, while only one became important after the larger species had become depleted).   "