I love these Puddle Jumpers I got for the kids last year. They're approved life preservers but they let the kids have better range of motion then most other life preservers.
This is how I spent my mornings... reading by the water while the kids dug in the sand. The best way to start a day if you ask me!
This is how I spent one afternoon. If it had been cooler, I would have spent every afternoon in the hammock.
We spent a lot of time in the water. It kept us cool and it was fun!