I was in an above ground cave once near the Buffalo River in Arkansas a few years ago. Interesting stuff. There are trips you can go on around Crystal River in Florida if you want to swim with the manatees. You are not allowed to touch them, but you can see them up close. What is striking is the number of boat propeller injuries to the backs of these animals.
I've heard about the propeller injuries before. I'm aware there are some areas forbidden to boats, but don't know how prevalent that is. Doesn't the state regulate boat traffic or speeds in known manatee waters? If not, is anything done at all to protect them?