LONG BEFORE HE played Aquaman, rightful heir to the underwater kingdom of Atlantis, actor Jason Momoa was an aqua boy. Born in Hawaii, Momoa spent much of his childhood in smalltown Iowa, where he lived with his mother. But even landlocked, he was extremely invested in aquatic ecosystems, spending his high school years taking college-level marine biology classes. “We had all these aquariums,” Momoa, 45, says animatedly, recalling the campus’s eels and sharks. “That’s where it all started. I was in marine biology, in Iowa.”
After high school he was cast in Baywatch at 19, not an obvious avenue toward a marine biology career but a move that was ocean-adjacent nonetheless. A new trajectory opened up, and with roles in Game of Thrones, Dune, and, of course, Aquaman, he became…