Continuity mistake: When James Bond is fighting underwater with an opponent, the opponent rips off James' diving mask (which is blue). Then James rips another mask off another opponent who is lying dead on the ocean floor. This dead opponent's mask is black. James puts on the black mask and then he turns around and the mask is blue again.
Continuity mistake: When Bond and Felix go out for the first time to search for the missing plane, Bond's hair has a parting to the left and is wearing watch on his left arm, but at the moment when they are flying over Largo's house, Bond is looking through a pair of binoculars. As he says to Felix "separate pools for sharks, no less" his hair is now parted on the right and his watch is now on his right arm, also watch out for the mouthpiece on Felix's headphones - it changes from left to right.