sea otter

noun

: a rare marine otter (Enhydra lutris) of the northern Pacific coasts that may attain a length of six feet (two meters), is chiefly brown but with lighter coloration on the back of the head and neck, and feeds largely on shellfish

Examples of sea otter in a Sentence

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The death toll included 250,000 seabirds, 2,800 sea otters, 300 harbor seals, 250 bald eagles, 22 killer whales and billions of salmon and herring eggs. Alex Kuffner, USA Today, 15 Apr. 2026 Aquarium officials said Suri and Willow may serve as surrogate mothers for other orphaned sea otter pups. Tim Fang, CBS News, 15 Apr. 2026 Superlative fur So how do sea otters manage? Encyclopedia Britannica, 8 Apr. 2026 The spill hit 1,300 miles of coastline, leading to the deaths of about 900 bald eagles, 300 seals, 1,000 harlequin ducks, 2,800 sea otters and 250,000 seabirds, according to the conservation group Oceana. Arizona Republic, AZCentral.com, 24 Mar. 2026 See All Example Sentences for sea otter

Word History

First Known Use

1664, in the meaning defined above

Time Traveler
The first known use of sea otter was in 1664

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Cite this Entry

“Sea otter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20otter. Accessed 22 Apr. 2026.

Kids Definition

sea otter

noun
: a large marine otter of northern Pacific coasts that feeds mostly on shellfish (as clams, crabs, and sea urchins) and can grow to nearly six feet (two meters) in length

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