From what I hear there are several expeditions in various campaigns that are heading to interior of Monster Island. Built up some new versions and new variations of the shoals, flocks and hordes in the Monster Island. Now there exists all the sizes of Flocks and the links work again for example: Enormous Swarm of Jellyfish . You can find all these by using search word : Flock , it will find also other people’s flocks.
Rats
Include chance of getting a disease
Bats
Piranhas
They include blood sense and swimmer ability.
Leeches
Crab swarms
Jellyfish
Notes From Pavis 