Sponges are multicellular animals that have bodies full of pores and channels allowing water to circulate through them. They lack nervous, circulatory, and digestive systems. Most live in salt water.
Sponges
vase sponge
encrusting sponge
ball sponge
tube sponges
irregular sponge
rope sponge
barrel sponge
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Last modified 30 July 2019