Red fire ants have created a raft by placing the brood on the bottom for the base and then linking together to float. The queen is protected in the center.
Make Ant Rafts
In the situation of a flood, ants will quickly link together building an “ant raft”. The brood, the youngest colony members that include eggs, larva, and pupa, are extremely buoyant and placed on the bottom serving as the base of the raft. They will then place the queen in the center and surround her with workers.