How long can babies survive underwater?

They would be able to survive for some time, probably 8-9 minutes without becoming unconcious. They will not breath in the water as when all animals(that includes humans) are underwater, we have a natural instinct to hold our breath, we dont need to "learn" how to hold our breath, if we needed to learn then we would all drown in our mothers womb. Adults are more likely to drown than babies because adults pannic and gag underwater, causing them to choke and cough, which in turn causes them to start breathing water. babies have no such sence of pannic at a new born age.