"In a Flood, Ants Really Come Together", they can link their bodies together to create buoyant rafts to protect the queen and her brood. It's amazing to see how flexible they are when they bond together! "Worker ants are dispersed throughout the raft and form a dome atop the base and around the queen. This position allows them to recover quickly once the colony emerges from the flood so they can aid the queen and the brood."
Check out the video: http://nyti.ms/1cOGI7l
News article: http://www.nytimes.com/2014/02/25/science/in-a-flood-ants-really-come-together.html