Note: While not closely related, porpoises and dolphins share a physical resemblance that often leads to misidentification. Porpoises typically have flat, spade-shaped teeth, triangular dorsal fins, and shortened beaks with relatively small mouths while dolphins have cone-shaped teeth, curved dorsal fins, and elongated beaks with larger mouths.
David LewisExamples of porpoise in a Sentence
Hillary Richard, Vogue, 1 July 2024
Dolphins in turn are a type of toothed whale, a group that also includes porpoises, beaked whales and sperm whales.
—Elizabeth Weise, USA TODAY, 24 May 2024
Katie Lockhart, Robb Report, 16 Apr. 2024
As if on cue, dolphins porpoised in the water directly ahead.
—Emma Allen, The New Yorker, 14 Aug. 2023
See all Example Sentences for porpoise 
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“Porpoise.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/porpoise. Accessed 15 Jul. 2024.
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