The Oklahoma Octopus is described as an octopus alleged to be the size of a horse with reddish brown, leathery skin. And long tentacles, used to pull down unsuspecting victims. The mysterious cephalopod is believed to be responsible for countless drownings in the lakes of Oklahoma, hence it's name. There is no wildly accepted explanation of how the Oklahoma Octopus could even survive outside of the ocean, but some theories suggest it may have somehow adapted to the freshwaters of Oklahoma.