Avengers (2018) #9 (SUJIN JO MARVEL BATTLE LINES VAR)

WORLD WAR BELOW! With the underwater world on the brink of war, the Avengers go aquatic to save the day, but air-breathers are no longer welcome in the undersea city of Atlantis. And Namor, the Sub-Mariner, lord of the seven seas, has a bold new plan that will change the balance of power on Earth forever. Rated T+