Gorgeous morning to be out there!

I checked out some of the channel on my way out and back & covered 13 & 14 (sorry, should have gone through 15 on my way - next time!). I will keep my eye on the channel. All seems well, with lots of turtles and fish in the shallows. I did see a number of little swimming caterpillers that I can't identify. Some were floating on a leaf, but others just in the water.  Do you know what they are? Assume they are ok? Enjoyed using Don's tracker!