We had days and nights in paradise. Swimming with piranhas yet! And I actually got a bit of one which friends caught. Delicious, but they are awfully small. We also swam with sleeping caimans, but I am used to swimming in aligator locales, so that's OK. The trick is to immerse the whole body, not the fingers or toes. And do NOT trust crocodiles. Anyhow, one of the many adventures at Sacha was fishing for Pirhanas. In the pouring rain, in our case. And in my case, I would call it "feeding the Piranhas" the bait.