sea hare

noun

: any of various large opisthobranch mollusks (especially genus Aplysia) that have an arched back and two anterior tentacles and have the shell much reduced or missing

Example Sentences

Recent Examples on the Web Researchers are using the sea hare model to learn about individual cells function, discover the chemical pathways controlling various brain activities and to study how memories are processed and stored. Discover Magazine, 16 Mar. 2017 As a model system, the humble sea hare’s brain is relatively simple, composed of about 20,000 neurons that grow throughout its lifetime. Discover Magazine, 16 Mar. 2017 Live crabs, algae, anemones and a sea hare, collected from the La Jolla tide pools that morning, were displayed in plastic cups and aquariums on one of the tables. San Diego Union-Tribune, 18 July 2019 This is wrong; Aplysia is a sea hare, a group within the sea slugs. John Timmer, Ars Technica, 16 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sea hare.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1593, in the meaning defined above

Time Traveler
The first known use of sea hare was in 1593

Dictionary Entries Near sea hare

Cite this Entry

“Sea hare.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20hare. Accessed 26 Jan. 2023.

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