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Phylum Porifera
Sponges are a diverse group of sometimes common types, with about 5000 species known across the world. Sponges are primarily marine, but around 150 species live in fresh water. Sponges have cellular-level organization, meaning that that their cells... More >>
Other Phyla:

en.wikipedia.org/wiki/Sponge

Sponges are the basalmost clade of animals of the phylum Porifera They are multicellular parazoan organisms that have bodies full of pores and channels ...

www.ucmp.berkeley.edu/porifera/porifera.html

The approximately 5,000 living sponge species are classified in the phylum Porifera, which is composed of three distinct groups, the Hexactinellida (glass ...

shapeoflife.org/phylum-porifera

Sponges Sponges are considered the oldest animal group. They are multicellular but don't have tissues or organs The name porifera means 'pore bearer' in ...

study.com/academy/lesson/phylum-porifera-definition-characteristics-examples.html

Jan 11, 2016 ... In this lesson, we will explore the phylum Porifera and look at the organisms that make up the group. We will discuss their key features, body...

www.earthlife.net/inverts/porifera.html

An introduction to the biology, classification and ecology of sponges, the phylum Porifera.

www.dgs.udel.edu/node/310

Phylum Porifera is a group of simple animals that includes the sponges. Porifera have no internal organs, nervous tissue, circulatory system, or digestive ...

animaldiversity.org/accounts/Porifera

Sponges are a diverse group of sometimes common types, with about 5000 species known across the world. Sponges are primarily marine, but around 150 ...

www.ncbi.nlm.nih.gov/pubmed/22560777

Sponges (phylum Porifera) are a diverse taxon of benthic aquatic animals of great ecological, commercial, and biopharmaceutical importance. They are ...

eol.org/pages/3142/overview

Sponges (phylum Porifera) are an exclusively aquatic and, with a few exceptions (Vacelet and Boury-Esnault 1995), a filter-feeding group of animals. The group ...