The Antrea Net is the oldest known fishing net in the world, dated 9310±120 BP or in calendar years 8300 BC with radiocarbon dating. It was found by a farmer named Antti Virolainen in Antrea, Finland (today Kamennogorsk, Russia) in autumn 1913, while he was ditching a swamp meadow. The place was then excavated by the Finnish archaeologist Sakari Pälsi. The net is made out of willow and it is 27–30 metres long by 1.3-1.5 metres wide, with a 6 cm mesh.
The net had sunk to the bottom clay of the Ancylus Lake that existed during that period, most likely in an accident that made the fisherman's boat capsize and lose all his equipment. Along the net various tools were found, including hunting weapons, fist-sized rock weights, floats made from Scots Pine bark and other tools made out of bones.