Action Comics #538

Issue Number 538----Issue Date 12/1982----CGC 8.0

The Measure of a Superman!; - As Jackhammer runs rampant over Metropolis, Superman struggles to get the confidence to tackle him in his weakened state. 

"Mera, Mera, on the Wave - Who's the One You've Got to Save?" - Aquaman and Mera are beset by the attacking dolphins, and Meras continued attempts to communicate telepathically with them electrify the porpoises like electric eels; Aquaman manages to get three of the dolphins to smash into his hard-water block, freeing him.