A Cyclosa spider is camouflaged on a web with debris attached to make itself less visible at the Los Amigos Biological Station, Peru. Emanuele Biggi, Nature Picture Library In a narrow passage deep ...

Though sea spiders have thrived for millions of years in a variety of marine conditions—in cold Antarctic waters, on deep seafloors and along rocky, estuarine shorelines—it is correct to call them ...

Jumping spiders have tiny and relatively simple brains, but scientists are discovering they are among the smartest ...