There was a river a couple hundred feet across. Not fast moving. I was wading in a pool below a 3 foot tall waterfall. On top of the water fall people were wading. I was hold a kayak or something like that.

I looked downstream and saw a log, which as I looked closer turned out to be a large crocodile. I decided not to paddle downstream but use the people on top of the waterfall to help me out of the pool below.

While making my way to the waterfall to get out the crocodile had disappeared into the water.