Definition of sea butterfly in English:

sea butterfly

Line breaks: sea butter|fly

noun

A small mollusc with wing-like extensions to its body which it uses for swimming.
  • Orders Thecosomata (with shells) and Gymnosomata (lacking shells), class Gastropoda
More example sentences
  • The opisthobranchs include the sea slugs and their relatives the sea hares, sea butterflies, canoe shells, and others.
  • These all feed on pteropods, or sea butterflies, one of the species most threatened by rising acidity.
  • The divers visit a small skerrig surrounded by a kelp forest with nudibranchs, comb jellyfish and sea butterflies.

Definition of sea butterfly in:

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal