This is the last double-story issue-after this, the title chances to The Hulk, but retains the numbering. Which means the comic titled “Hulk” will go from issue #6 to #102. Confusing.
As for the story, Loki brings Hulk to Asgard and Namor learns that Atlantis has been destroyed. Both stories end as cliffhangers, to lead into solo books by each character.
Creators: Hulk: Stan Lee and Marie Severin
Sub-Mariner: Archie Goodwin and Gene Colan