''Terpios fugax'' is a species of

sea sponge Sponges or sea sponges are primarily marine invertebrates of the animal phylum Porifera (; meaning 'pore bearer'), a basal clade and a sister taxon of the diploblasts. They are sessile filter feeders that are bound to the seabed, and are o ...

belonging to the family

Suberitidae Suberitidae is a family of sea sponges belonging to the order Suberitida. Genera *''Aaptos'' *''Caulospongia'' *''Homaxinella'' *''Pseudospongosorites'' *''Rhizaxinella'' *''Suberites'' References

Suberitidae, Sponge families {{demos ...

. It is found on

rocky shore A rocky shore is an intertidal area of seacoasts where solid rock predominates. Rocky shores are biologically rich environments, and are a useful "natural laboratory" for studying intertidal ecology and other biological processes. Due to th ...

s on both sides of the North

Atlantic The Atlantic Ocean is the second largest of the world's five oceanic divisions, with an area of about . It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for se ...

. This species forms small, thin patches on rocks and would be inconspicuous if it weren't for its colour, a startlingly vivid blue.

References

''Terpios fugax''
at

World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ...

*Barrett, J. & Yonge, C. M. (1958) ''Collins Pocket Guide to the Sea Shore''. Collins, London p43 Suberitidae Sponges of the Atlantic Ocean Sponges of Brazil Sponges described in 1864 {{demosponge-stub