barrel sponge

English

A barrel sponge,
Xestospongia testudinaria

Noun

barrel sponge (plural barrel sponges)

1. A sponge of the genus Xestospongia, especially Xestospongia testudinaria.
   • 2012, Caspar Henderson, The Book of Barely Imagined Beings, Granta Books, published 2013, 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.

References

• Demosponge on Wikipedia.Wikipedia
• Demospongiae on Wikispecies.Wikispecies
• Category:Demospongiae on Wikimedia Commons.Wikimedia Commons