Aeolius
Adventurer
Gavin said:...1) Schools of fish controlled by intelligent hive minds...3) An island sized Portugese Man-O-War... 4) What about all those freaky skeletal fish that live at the bottom of the ocean and use lights to snare prey?...
funny you should mention it

I am working with a new BPAA player, who will be playing a collective school of small fish. We got the idea from the cifal, but I revised the beastie to include hags, of course
Man-o-wars are another interesting subject, as they are actually a colony of four distinctive types of polyps. I added jellyfish-like merfolk, in BPAA.
As for angler fish, yes, they are too cool. I have angler beholders which dwell in the depths, using one of their eyestalks as a glowing lure.