File:Demosponge2.jpg
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Demosponge2.jpg (388 × 500 pixels, file size: 279 KB, MIME type: image/jpeg)
Summary
Sponges are the simplest & oldest multicellular animals. They first appeared over 450 million years ago. Sponges are sessile filter-feeders. Sponges can filter 2 tonnes of water per day. There are about 15,000 species of sponges worldwide, with 70% still undescribed
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http://www.flickr.com/photos/anel/484789830/
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:32, 14 November 2007 | ![]() | 388 × 500 (279 KB) | Sarah (talk | contribs) | Sponges are the simplest & oldest multicellular animals. They first appeared over 450 million years ago. Sponges are sessile filter-feeders. Sponges can filter 2 tonnes of water per day. There are about 15,000 species of sponges worldwide, with 70% still |
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