Phylum in the animal kingdom containing a single known species, Trichoplax adhaerens, which creeps over the surface of seaweeds in tropical seas. Placozoans are simple creatures without a clearly defined shape and sometimes behave as if they were colonies of individual organisms.
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- A Weird Wee Beastie: Trichoplax adhaerens Article by Richard Howey on this organism which is considered to be the most primitive multi-cellular animal known.
- Trichoplax Information from Wikipedia on this genus of simple marine organisms, with a photograph.
- Introduction to Placozoa Information and a photograph of these strange organisms which have never been observed in their natural habitat.