Martin Nyffeler, a zoologist from University of Basel, and Bradley Pusey, a fish expert from the University of Western Australia, have “documented numerous incidents of spiders predating fish from all around the world.Many of these spiders can swim, dive and walk on the water—and some pack powerful poisons, both neurotoxins and other enzymes, enabling “them to kill and digest fish that often exceed them in size and weight.”But most spiders aren’t harmful to humans.
