Kamandi, The Last Boy on Earth — DC Comics
Issue: #39 MJ
An air-filled aquarium of sorts run by intelligent sea life becomes a prison for Kamandi and Arna.Kamandi and Arna find themselves prisoners in an air-filled "aquarium" maintained by intelligent sea creatures.
Creators: Jack Kirby, Gerry Conway, Joe Kubert, Michael Royer
Characters: Kamandi, Pyra, Tuftan, Dr. Canus, Ben Boxer, Arna