Comic Title: World's Finest Comics #203
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: June 1971
On Sale Date: April 22, 1971 Copyright Date April 22, 1971
Source: Library of Congress, Periodicals 1971

Newsstand Date April 22, 1971
Source: Etcetera, V1 #2

Frequency: Monthly, (with the exception of Jan., Apr., and July)
Cover Price: $0.15
Page Count: 32
Editor: Julius Schwartz

Title: "Who's Minding the Earth?"
Pages: 22

Feature(s):
Superman (of Earth-1)
Aquaman (of Earth-1)

Writer: Steve Skeates
Penciller: Dick Dillin
Inker: Joe Giella

Reprinted In:
Best of DC #13 (1981)
World's Finest:Guardians of Earth HC (2020)

Feature Character(s)

• Superman (last appearance in Superman #238; next appearance in Action Comics #401)
• Aquaman (last appearance in Justice League of America #89; next appearance in Super DC Giant S-26)

Villain(s)

• A group of mutant dolphin twins (no further appearances)

Other Character(s)

• A mutant dolphin (no further appearances)
• Several scientists (in flashback; no further appearances)

Synopsis:
Aquaman follows an underwater rainbow and strange sounds to a nearby island. On the island he finds the ruins of an oceanography lab. He is then attacked by a group of mutant dolphins and knocked unconscious.

Later in Metropolis, Clark Kent meets a strange creature who is searching for Superman. The creature causes Superman and everyone nearby to temporarily lose their sight. It then splits in two and heads out to sea. Superman follows it. He finds Aquaman and revives him.

Together the two heroes meet the original creature. It explains that it is a mutant dolphin that was raised by humans. However, it began uncontrollably spawning clones of itself which were bent on the destruction of mankind. There are now many clones assembled. The clones use their mental powers to occupy Superman with a hallucination. Aquaman fights on. Eventually, Superman breaks the spell. Working together the mutants are defeated. Superman then carries them to another world where they can develop without threatening humanity.