: a very large toothed whale (Physeter macrocephalus synonym P. catodon) that has large conical teeth in the lower jaw, a single blowhole, and a massive squarish head with a closed cavity containing a fluid mixture of spermaceti and oil, and that may reach a length in the male of nearly 60 feet (18.3 meters)
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In contrast, just 27 sperm whale sightings have been recorded in the past 35 years, averaging less than one per year.—Brendan Rascius, Miami Herald, 28 Mar. 2025 His discovery of the gigantic cuttle fish, on which the sperm whale feeds, was another very remarkable achievement.—Rob Crossan, JSTOR Daily, 21 Mar. 2025 For unclear reasons, sperm whales poop more than average in Dominica, a tiny nation in the Caribbean.—Emily Matchar, Smithsonian Magazine, 27 Jan. 2025 However, events turn left when a large sperm whale sinks their ship.—Gabrielle Rockson, People.com, 6 Jan. 2025 See All Example Sentences for sperm whale
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