Encyclopedia Britannica Editor
The biggest spider web ever recorded was found in Madagascar and described in scientific journals in 2010. It was woven by a newly described species called the Darwin’s bark spider (Caerostris darwini). This orb weaver spider is unique in that it spins its web across a river. The bridge lines, which anchor the web, can be as long as 25 meters (82 feet), and the web as a whole spans an area of as much as 2.8 square meters (30 square feet).