I saw an article in the paper a few days ago and then on TV where they had found some species of Giant turtles. They showed one swimming in the water and that thing was as large or larger than and sea turtle I have ever seen. His head looked as if it was about 10" across and the shell was large enough to stand on. And according to the report, larger ones had been seen in that lake. Wish I could remember where it was.
Ron
