Sub-Mariner (Sub-Mariner #63)

"And the Seas Shall Explode" - Namor investigates reports that the seas beyond Atlantis are boiling. He confirms the threat and learns that Dr. Hydro is the mastermind behind it.

Also... "Tales of Atlantis: Cataclysm!" - Having begun the destruction of their city, Kamuu and Zartra dismiss their counselors and await death in each other's arms. However, fate still has plans for them and not such an easy end!