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Old 13-02-2008, 08:29 AM
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paul m paul m is offline
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The first are 'bloodworms' larvae or (the hairy bit) pupae of chironomid flies. They are characterised by having a form of haemoglobin (like vertebrates) which allows them to extract oxygen from deep, poorly oxygenated water. I don't think any other insects do this. Laurence may be able to tell you more.

The second picture seems to be a millipede (Diplopoda) - don't know what it was doing in the water!
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