Menace Of The Man-Fish! * Doctor Deering single appearance Aquaman and Aqualad are present when Dr. Deering, a scientist, is turned into a water-breather by a backfired experiment. Deering, who has also created a gigantic underwater construction machine, is maddened by his fate, uses his machine to steal skyscrapers, and then builds a “city” of his own beneath the sea. When he tries to populate it with persons from a stolen ship, Aquaman and Aqualad intervene. Deering captures them, but Mera arrives on a visit from her world and frees her friends. Finally, Deering’s ability to breathe underwater wears off, as does his madness, and Aquaman saves his life. Aqualad helps put back the skyscrapers with Deering’s machine.