User:jayden7d22vla1

Zoanthid "skeletons": Animals in this get of maritime benthic cnidarians linked to corals and sea anemones, incorporate sand into their mesoglea for structural strength, which they have to have mainly because they deficiency a true skeleton.

https://adysaputro23.blogspot.com/2015/06/jual-fungsi-antrasit-garnet-sand-pasir.html