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Poriferans are also known to be as "sponges". Their name means "pore bearer" in Latin. They are the most primitive of the multicellular animals. Poriferans can come in different sizes. In the freshwater, there are big and small sponges. Also, they can come in different color. Its usually bright colors. These sponges have been around Earth for about 600 million years or more. Inside the water there are about 15,000 species of poriferans to find.

In the branching event a separtion occured which separted sponges from other metazoans. These animals existed during the Late Precambrian. Due to studies showing that sponges are members of fossil communities the fossil genera is 900, give or take a few. In the phylum Porifera there are three distinct groups; the Hexactinellida, the Demospongia, and the Calcarea.



Sponges are sessile quatic organisms therefore they are in one place. They can be found anywhere in a marine environments. Although, they do not have a lot of cell types some cells can migrate around the sponge and can change cell types. Also, poriferans body shape helps them to optimize water flow. They can be a big help for other sea animals for protection.

-Asexual or sexual reproduction (they can be both female and male at the same time)- They eat 80% water and 20% bacteria- Sea slugs can eat sponges- Phylum porifera have a lot of fossils- Get food cells make small pores that filter food from the sea- Some cells also form flagella that runs through a series of bodily channels

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By: Ayah Maklani 3/5/16


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