Just checking out this splash page from Adventure #220. Is this the first time that Aquaman's calf fins are shown to be part of his body as opposed to just part of his costume? I always thought that was a "Legend of Aquaman" development. I could swear that Nick Cardy drew an undercover Arthur (Mr. Waterman, heehee) sans the fins in the Huntress from O.G.R.E. issue.
Is Adventure #220 considered a Golden Age tale? Maybe the GA Aquaman had the fins, the Silver Age lacked them , and they were brought back for the Modern Age.