User blog comment:Kaido King of the Beasts/Chapter 877: The Candy Shop is Closed/@comment-71.13.82.131-20170831195048

I am expecting that Pedro did survive and it will be due to something of the fishman that Chopper saw earlier. From the brief mention it sounds like the fishman was prepping something, which will unknowling to Pedro give him an out that allows for hurting Perospero but killing neither.