sea hare

noun

Any member of the order Aplysiamorpha or Anaspidea, large marine gastropod molluscs with a soft internal shell made of protein.

Similar
Aplysia punctata
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Meanings

nounsea hare (plural sea hares)

plural sea hares · alternative seahare · alternative sea-hare

  1. Any member of the order Aplysiamorpha or Anaspidea, large marine gastropod molluscs with a soft internal shell made of protein.

    Pliny saith that there are certaine Seahares in India that to us are poison, and we bane to them; so that we die if we but touch them; now whether is man or the Sea-hare poison?

    1603, Michel de Montaigne, chapter 12, in John Florio, transl., The Essayes […], book II, London: […] Val[entine] Simmes for Edward Blount […], →OCLC

Synonyms & antonyms

nounnaked marine gastropod having a soft body with reduced internal shell and two pairs of ear-like tentacles

Similar
Aplysia punctata
Broader
gastropodunivalve
Also see
anaspidean

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

From their marine habitat and a pair of rhinophores that resemble a rabbit's ears.

Full word history & related roots →

Translations

Catalan llebre de mar
  • llebre de marlarge marine gastropod mollusc
Dutch zeehaas
  • zeehaaslarge marine gastropod mollusc
French lièvre de mer
  • lièvre de merlarge marine gastropod mollusc
German Seehase
  • Seehaselarge marine gastropod mollusc
Hawaiian kualakai
  • kualakailarge marine gastropod mollusc
Italian lepre marina
  • lepre marinalarge marine gastropod mollusc
Japanese アメフラシ
  • アメフラシ (amefurashi)large marine gastropod mollusc
Norwegian Bokmål sjøhare
  • sjøharelarge marine gastropod mollusc
Polish zając morski
  • zając morskilarge marine gastropod mollusc
Spanish liebre de mar
  • liebre de marlarge marine gastropod mollusc
Swedish sjöhare
  • sjöharelarge marine gastropod mollusc
Vietnamese thỏ biển, bún mẹ
  • thỏ biểnlarge marine gastropod mollusc
  • bún mẹlarge marine gastropod mollusc
Welsh môr-geinach
  • môr-geinachlarge marine gastropod mollusc
Cite this entry
APA

sea hare. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sea%20hare

MLA

“sea hare.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sea%20hare. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “sea hare,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sea%20hare.

Source: sea hare on Wiktionary, CC BY-SA 4.0.