sea hare


: 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

Examples of sea hare in a Sentence

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 examples are programmatically compiled from various online sources to illustrate current usage of the word 'sea hare.' 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

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.” Dictionary, Merriam-Webster, Accessed 25 Jun. 2024.

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