Does Eight Hours in Fresh Water still count?

Fourth of July weekend, Lake Winnepesaukee New Hampshire, I swam for eight hours escorted by my faithful husband and joined for two important hours by my sister Krysia. We got a late start, about 4:30 am, but the sun never really came out luckily. I swam from Kenniston Island to Parker Island, back to shore and down to Goodhue and Hawkins Navy Yard to get some gas, then back across the broads to Kenniston so Jorge could have a break and grab some food. While he was on land I kept swimming around Kenniston, then he got back in the boat and my sister Krysia and I swam across to Barndoor Island, around it, and Little Barndoor, and back home. This wasn't quite eight hours so I went around Kenniston one more time for a total of 8:05. I don't know how far I went because my phone GPS crapped out because I hadn't charged it properly. The water was about 66-68 degrees, there were about two hours of the eight that I would consider rough swimming, waves, wind and white caps around the backside of Barndoor and in the Broads, but all in all a great swim. I can't believe how well Jorge did. He just slogged it out. I can't imagine what he was thinking, but he probably thought the same thing about me. I counted to 100 a lot.