Phylum Porifera

Phylum Porifera is a phylum of Kingdom Animalia. The defining characteristics of Phylum Porifera is that organisms of Phylum Porifera gain energy by intracellular digestion. Choanocytes are unique to organisms of Phylum Porifera. An example of an organism of Phylum Porifera is Ircinia strobilina.

Ircinia strobilina