river dolphin

noun

: any of various small, toothed whales (as of the families Platanistidae and Iniidae) that chiefly inhabit rivers of South America and Asia and have a rounded forehead and a snout elongated into a long beak

Examples of river dolphin in a Sentence

Recent Examples on the Web In fact, all extant river dolphin species are endangered or critically endangered, the IUCN says. Mindy Weisberger, CNN, 26 Mar. 2024 The largest river dolphin fossil has been found — thousands of miles from its nearest living relative, reports an international group of paleontologists in Science Advances. Paul Smaglik, Discover Magazine, 22 Mar. 2024 Amazon river dolphins die en masse The bodies of more than 150 pink river dolphins were found in unusually warm waters in Lake Tefé in the Amazon this fall, when some of the more pronounced effects of El Niño emerged. Bryan Pietsch, Washington Post, 19 Feb. 2024 There’s the South Asian river dolphin (Platanista genus) and the Amazon river dolphin (Inia genus), also known as the pink river dolphin, and the two groups include several species and subspecies. Mindy Weisberger, CNN, 26 Mar. 2024 The study noted that it has previously been observed in a number of marine mammals, including walruses, Amazon river dolphins and gray seals. Matt Lavietes, NBC News, 29 Feb. 2024 Female koalas sometimes mount other females, while male Amazon river dolphins have been known to penetrate each other’s blowholes. Jennifer Ouellette, Ars Technica, 5 June 2023 Due to the low water levels, endangered pink river dolphins in Lake Tefé, Brazil are at risk of suffocation and a major hydropower plant near Porto Velho has also been shut down. Laura Baisas, Popular Science, 25 Oct. 2023 In Lake Tefé, water temperatures remain high and the carcasses of more pink river dolphins have surfaced over the last week, bringing the death toll to 153 since the first carcasses were recovered on Sept. 23, Dr. Fleischmann said. Manuela Andreoni, New York Times, 17 Oct. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'river dolphin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1870, in the meaning defined above

Time Traveler
The first known use of river dolphin was in 1870

Dictionary Entries Near river dolphin

Cite this Entry

“River dolphin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/river%20dolphin. Accessed 23 Apr. 2024.

Last Updated: - Updated example sentences
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