Aquaman Vol. 6 (2002-2006) / Aquaman: Sword of Atlantis (2006-2007) #35

Plot

Aquaman takes Mera, who can now only breathe air, to Anton Geist so he can give her water-breathing powers like he did for the residents of Sub Diego. When Anton suddenly turns into an OMAC the battle rages from under the ocean and onto the beach before Koryak shows up and destroys the OMAC.