I came across this Ambon scorpionfish (Pteroidichthys amboinensis) yesterday:
They're fairly common in Lembeh and other places in Indonesia...if you actually manage to find them of course (given their excellent camouflage).
Oddly enough though, I've haven't actually come across this type of fish in Ambon, despite the fish's common name...sort of a head-scratching "hmmmm" kind of thing.
Anyway, finding critters like this is what muck diving is all about. Making them look cool is what muck photography is all about.
Incidentally, I'll be heading to Ambon in November, where I'll be sure to keep an eye out for this fish!