Video recorded by WSAV photojournalist Chris Murray shows what appears to be a floating island of fire ants on top of the water in Dorchester County, South Carolina.
...According to livescience.com, fire ant rafts can be put together in about 100 seconds. They studied the phenomenon. The fire ants use claws, jaws and adhesive pads on their legs to stick together. They release an oily fluid that lets them stick to a smooth surface and the ant's hard covering is water-repelling.