I don't remember any such thing; all I remember on the coast were turtles, not even regular fishthern. Chapter 5 is fradz/phodom's first reunion chapter)
Minibosses I remember are like
Earth Elemental, Vampire, Ghost Wolf, Bear, Super Turtle, Doomguard from portal, Khazra captain if you chose John over William, Pumpkin King, Jack the Super Zombie, then Chapter boss was the skeletal puppet, elite boss was talloon the druid, epic boss was john the invisible monster.