1977 Super DC Calendar for June: Aquaman vs Black Manta.
Niagara Falls: sightseeing tourists are stunned into awed silence as the dreaded Manta-Ship appears at the crest of the falls. On the vessel’s hull, AQUAMAN, King of the Seven Seas, grapples with his mysterious enemy BLACK MANTA. As these two titans of the deep battle, MERA, the wife of Aquaman, uses her power to shape water into solid masses to rescue the Sea King’s young ally, AQUALAD. Seconds later, with a final blow that resounds above even the roars of these mighty falls, Aquaman is victorious! Art by Jim Aparo.