I only learnt to swim as an adult (and it was very difficult) and I don't want my kids to have to go through that stress. I don't need them to be olympic swimmers, but I would like them to be confident in the water before they are say 10years (and perhaps strong enough to swim themselves to shore if we are holiday and the waves happen to carry them far away). What do I need to do? Are weekly swim classes from school enough? Or do I need to do more? My kids are 3 and 5. If i do need to additional classes - what is a good age for them to start? And about how long will they need to do classes for? Thank you so much for your personal or mummy advice!