barrel sponge
English
Noun
barrel sponge (plural barrel sponges)
- A sponge of the genus Xestospongia, especially Xestospongia testudinaria.
- 2012, Caspar Henderson, The Book of Barely Imagined Beings, 2013 edition, Granta Books, page 29:
- In making use of something as simple as a difference in water speed, barrel sponges are exploiting energy from currents and tides that ultimately derive from the gravitational pull exerted by the Moon and Sun.
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References
- Demosponge on Wikipedia.Wikipedia
- Demospongiae on Wikispecies.Wikispecies
- Demospongiae on Wikimedia Commons.Wikimedia Commons