Spider, Darwin Dark
Darwin's Dark Spider
Photo: Matjaž Kuntner (Scientific Research Centre of the Slovenian Academy of Sciences and Arts)
This enormous spider was found in Madagascar, home to many species found nowhere else in the world. These spiders build enormous webs, as you can see, spanning everything from trees to rivers. One monster of a web was measured at 82 feet across a river.
The other unusual thing about the web the Darwin's dark spider weaves is that it has twice the strength of any other spider silk and up to ten times the strength of Kevlar.