Basket sponge
Basket sponge’s inhabit the deep ocean. The structure of this Porifera is very interesting as the body is made completely of silica and is essentially just a thin-walled, based shaped tube. In Asian culture they are often given as a wedding gift because two shrimp live in the sponge which symbolically represents a male and female living out their lives in the sponge. Just like all sponges the basket sponge does not have a nervous system.