Trivia: Winston Duke's line "you bald-headed demon" was improvised.
Trivia: Despite playing the ruler of an underwater kingdom, Tenoch Huerta didn't actually know how to swim before taking the role.
Trivia: This is the first film based on a Marvel property to be nominated for an Academy Award in an acting category, with Angela Bassett being nominated for Best Supporting Actress.
Trivia: This film marks the live-action debut for Namor, more than 83 years after his comics debut. He was originally supposed to be a member of the Illuminati in Doctor Strange in the Multiverse of Madness, according to writer Michael Waldron, but that appearance was scrapped since Marvel had different plans for him.
Trivia: According to Chadwick Boseman's family, Marvel had his blessing to recast the role of T'Challa. However, Marvel decided to retire the character instead to honor his legacy.