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| unidentified porifer growing on artificially exposed microslide. There is a dark "halo" around the porifer, because there are less microorganisms (bacteria etc.) growing around the sponge then farther awy. This suggests that the sponge is secreting antibiotiv substance to prevent being overgrown by bacteria. |
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| Location : nature reserve NSG Unteres Odertal; BB, Germany; Mummertgraben, |
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| Habitat : artificially exposed microslide |
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| Date : coll.: 26.05.2022; img.: 26.05.2022 |
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