Verongia_fistularis
Aplysina fistularis
Species of sponge
Aplysina fistularis (A. fistularis), also known as the yellow tube sponge or yellow sponge , [1] is a species of sea sponge in the order Verongiida.[2] Aplysina fistularis is a golden or orange-brown color with a conulose surface. The animal is abundant in the Caribbean, where it is commonly found in reefs of open water areas.[1] This sponge was first described by the Prussian zoologist Peter Simon Pallas in 1766.