Fire Ants...

Solepnosis invicta is some kind of ant called "fire ant", it is native from Brazilian, and like most of the creatures in the world it's under a lot of risks. This is more evident when we consider that it live on rainforest and it's constantly threatens by flood. So, the amazing is that these ants have a spectacular survival tactic, which i'm going to explain now.

This strategy involve entire colonies that when the flood water threatens its nest, this fire ants make some kind of living raft that can travel long distances until reach land or in the worst case until the water flood it. Besides they can breathe for air pocket get trapped between them and around their bodies. 
The fire ants achieve this locking legs and sometimes also mandibles to form the ship escape.

Studies about it show that the strong to grab hold of one another is on average, four hundred its body weight.

This strategy is so amazing that it has been recorded, and studied a lot. Even it has devised a mathematical model to describe how the fire ants stick together. The important of this is that it could be used to simulated the behaviour in a computer and it could be help to develop co-operative between robots.