Doing it for real
Some years ago I was at Oshkosh & was offered a ride in a small float plane. The take off began & I realised that something had gone wrong, in fact one float had delaminated & we went in at some speed. The aircraft nosed in & I found myself upside down & under water. I had never been on any survival course but was a regular swimmer. So extracting myself wasn't so difficult, once under water you are weightless & can swim out. Just follow the bubbles.
It has made me more cautious when flying over water but it hasn't stopped me. Just take adequate precautions & remember the engine doesn't know it's flying over water.