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fen raft spider

Fen Raft Spider Dolomedes plantarius

The Raft spider is a large, chunky spider that lives around the edge of ponds and ditches, and on wet heaths and bogs. Adults sit at the edge of the water, or on floating vegetation, with their front legs resting on the water's surface in order to feel for the vibrations of potential prey. Image: Neil Rolph (Flickr).

Find out more: iNaturalist, British Arachnological Society, Suffolk Wildlife Trust