The Porifera can be described as an multicellular asymmetrical or radially symmetrical organism having a cellular degree of organization that lacks welldefined organs and tissues that are exclusively aquatic, mostly sea-based, sedentary, single or conical creatures with body perforated through canals, pores and cambers that allow water to flow with at least one internal cavity filled with choanocytes and with a distinctive skull made up of calcareous spikes siliceous spicules and the horny fibers of spongin.