Sponges

By; Jessie Campo 5th hr.

Phyla: Porifera

The sponge is asymmetrical with one body cavity called the Osculum. It's digestive opening are its pores; all the reproduction is done outside the sponge with eggs and sperm, also budding. It's support system are spicules and the habitat they live in is marine. Sponges get their food by filter-feeding.

Benefits/ Harm for humans

Sponges can be used to bath, clean, decorations, or just scenery. They can harm us though by sometimes causing people to develop rashes or itching.

Benefits/ Harm to Their Environment

Sponges can benefit their environments heavily by filtering the water but over population can be harmful. It can cause crowding and upset their environment and how other species interact with them.