Fen Raft Spider

Dolomedes plantarius

The great raft spider or fen raft spider is a European species of spider in the family Dolomedidae. Like other Dolomedes spiders, it is semiaquatic, hunting its prey on the surface of water. It occurs mainly in neutral to alkaline, unpolluted water of fens and grazing marsh.

Scientific name
Dolomedes plantarius
Family
Pisauridae
IUCN status
VU