large water spider dolomedes plantarius, close-up in a natural environment. raft spider great royal exemplar dwelling in rivers

acuatica arachnia arachnid arachnida aracnia araneae arthropod arthropoda assassin big closeup depredadora dolomedes dwelling environment exemplar family feet fimbriatus great hunting insect killer lair lake large macro murderer natural photo pisauridae plantarius portrait predator prey protected raft river rivers royal spider stress swamp tension water weaving wild wildlife