Nice list! Need to add Carcharo to it however - short-lived Infinity Inc villain, but still counts. (damn, that makes 3 shark-based villains for DC alone. I'm surprised Marvel doesn't have more!)
I didn't see Deep Blue. Daughter of Npyune Perkins and Tsunami. From Peter David's Aquaman run.
@tamabone: Deep Blue is on the list. On Page Two. She Number 27.
Lorena Marquez, Lisa Morel?