I couldn't finish 'em. Looks like this's gonna get complicated.
Megamarina wander the Innsmouth Region and a battle is initiated when the player comes into contact with one. They are level 99 but behave the same as all other flan, slowly walking about and lunge at nearby targets, triggering a Breaksight strike chance.
Megamarina can be defeated easily even in low levels by exploiting their Breaksight. The player should run circles around the flan with a fast-acting cadet like Eight or Queen, dodge its lunge and then hit for the Breaksight till it dies.