"Side-By-Side with Sub Mariner
Dorma, Queen of Atlantis, comes to the surface to enlist the aid of the FF. Atlantis is under siege by an invading army lead by Attuma who is about to breech the Atlantian defenses manned by Namor and his army. But Attuma was aided by a scorned Dorma who realized her mistake which is why she turns to the FF. The FF head down to the ocean floor and help to defeat the attacking forces while Namor fights Attuma. In the end, Namor and his forces are victorious, if not oblivious to the help given to them by the FF.
1st appearance of Attuma