I know they are there (ranger told me), but have yet to see the salt-water crocs that inhabit the zone between Chocoloski and Flamingo... right where you kayak through the Nightmare..
And they're ornery reptiles, too. Not like your (usually) reclusive alligators.
And those pythons that are in excess of 20'... good times.
I'll stick to sailing about a mile off those mangrove cuts, thank you...