* : Mortimer's exposure to the effects of an unnatural aquatic essence named Strange Water causes his transformation into the relentless eel like predator, Dead Water.
** : Whole or partial body hydration coupled with aggressive emotional triggers causes the mystical transformation from Peter Mortimer to Dead Water, gifting him with a host of different abilities allotted to him in is altered state.
*** : Proved to be a physical match for Aquaman at hand-to-claw combat even slightly overwhelming him in brute force. Could easily rip apart flesh and blood humans with his teeth and jaws.
***
*** : Shown to be resistant to low caliber fire arms, trading blows with Aquaman, etc.
***
*** Prehensile Tail
***
***
** : Dead Water could control a unique form of liquid substance that enabled him a great many water based powers.
*** : Using water as a medium Mortimer can transport himself anywhere there is a receptive source of aqua he can exit out of.
*** : Dead Water can manipulate the matter state of his own corporal being, able to shift from solid flesh to immaterial liquid to harmlessly avoid attacks.