A race of water-breathing hexapuses from the planet Vortuma. Aquaman has taken it upon himself to help defend the undersea society of Vortuma against a group of marauders called the Land-Masters.
Aquaman leads the denizens of Vortuma to safety inside a nearby cave. But just as he gets them all inside, he is hit on the head and knocked out by a tentacle holding a rock.
When he finally awakens, Aquaman finds himself in the middle of some sort of desert—with no water in sight.
After staggering through under the blazing sun, Aquaman encounters some of the Land-Masters. Hoping they're not the same ones he met before, he tries to communicate with them, to no effect.
He then grabs one of their shirts, and find it tears off in his hands, spilling water all over him. Aquaman is confused—the Land-Masters were supposed to be air-breathers, so what are they doing with the water inside their suits?
The other two of the other Land-Masters run off, and Aquaman chases them, discovering open water!
Too weak to run any further, he collapses, and let's himself roll downhill into the sea. Aquaman discovers that the Land-Masters are the same creatures as the citizens of Vortuma!
A battle starts, and Aquaman manages to fend them off long enough for his friends who he left in the cave to reemerge, and together they defeat the Land-Masters. The leader of Vortuma mentions something called the Vibrus, a malevolent creature that lives in the depths of the sea. When attacked, it gives off high levels of vibration-energy, energy that could be used to replicate the beam that brought Aquaman there!
Aquaman finds the Vibrus—a magenta-colored, multi-fanged creature—and attacks it with just enough force that it expels some of its energy into Aquaman, causing the Sea King to dematerialize!
Meanwhile, back on Earth, Ray Palmer is on a sailing cruise with his wife Jean. Ray is enjoying himself, but Jean is nothing but complaints, especially about them having to be there to rendevous with Aquaman. Ray finds an unconscious Aquaman, and has to change into The Atom to have enough strength to bring Arthur to the surface.
- Action Comics Vol 1 529
- Action Comics Vol 1 527
- Action Comics Vol 1 528
- Action Comics Vol 1 530