Just when you thought they couldn’t get any creepier, scientists have discovered a number of aquatic fish-eating spiders that can consume prey twice their size and weight. That’s right, these creepy crawlies are capable of swimming, diving and walking on the water surface, in addition to having powerful neurotoxins and enzymes that enable them to kill and digest fish that often exceed them in size. Continue reading for more pictures and information.

According to The Daily Mail, “Most incidents have been documented in North America, especially in the wetlands of Florida, where semi-aquatic spiders have often been witnessed catching and eating small freshwater fish such as mosquitofish. In order to catch its prey, the spider will typically anchor its hind legs to a stone or a plant, with its front legs resting on the surface of the water, ready to ambush. The fish will then be dragged to a dry place before the feeding process can begin which usually lasts several hours.”