Lost ring in lake

Received a call from a lovely couple. They were spending a day at the lake in the water when the ring came off her finger. I met them for a quick boat trip out to the island where they were swimming.  Thankfully she marked exactly where she lost it by remembering a tree on the bank in front of her.. The ring was in about four feet of water right where she said it would be. This was a quick search made possible by some quick thinking.  So glad to help this family out.