''Stylissa flabelliformis'', known as the orange fan

sponge Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through t ...

, is found throughout the tropical

ocean The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the wo ...

s. It is usually shaped liked a Japanese fan hence its name. It feeds on

plankton Plankton are the diverse collection of organisms found in Hydrosphere, water (or atmosphere, air) that are unable to propel themselves against a Ocean current, current (or wind). The individual organisms constituting plankton are called plankt ...

. In the wild it prefers to grow on rocky shelves. It is sometime but not often kept by hobby aquarists.

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Stylissa flabelliformis info
Sponges described in 1912 Halichondrida {{Demosponge-stub