Polyrhachis sokolova is a species of ant which has been recently discovered to be capable of living underwater. Researchers at the James Cook University gained attention in 2006 after finding and reporting this behavior. Polyrhachis sokolova nests in submerged mangroves and hides from underwater predators in pockets of air . While swimming it has been documented that these ants are eaten by fish, mud skippers, and crabs.