Sunday, January 18, 2009

Daphnia (multicellular)

Daphina
Their average size is 0.5 - 4 mm.


You can find this amazing creature amongst plants, organic matter, or Planktonic etc.

The beating heart, compound eye and moving limbs can all be seen as they have a transparent shell. A common water flea Simocephalus is larger. Chydorus, is another common one, but smaller and more globular, and often found amongst weeds.
Water fleas are very simple to find in a jar of pond water because of the jerky movements of their second antennae . Hence their common name, although they are not fleas.
The females often carry live young, which is really kool to watch.


Classification : Kingdom - Animalia, Phylum - Crustacea, Order - Cladocera

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