One of the mysteries of the English language finally explained.
A small mollusc with winglike extensions to its body which it uses for swimming.
Orders Thecosomata (with shells) and Gymnosomata (lacking shells), class Gastropoda
- ‘These all feed on pteropods, or sea butterflies, one of the species most threatened by rising acidity.’
- ‘The opisthobranchs include the sea slugs and their relatives the sea hares, sea butterflies, canoe shells, and others.’
- ‘The divers visit a small skerrig surrounded by a kelp forest with nudibranchs, comb jellyfish and sea butterflies.’
Top tips for CV writingRead more
In this article we explore how to impress employers with a spot-on CV.