Salmon Run is the cooperative mode in Nintendo’s Splatoon series where teams of Inklings defend against waves of Salmonids, and boss Salmonids are the larger enemies that appear during each wave. Their arrival is marked by a distinctive alert so players can react quickly and focus fire before the boss overwhelms the team. Clips of the alert have circulated among Splatoon players and editors because it instantly reads as danger, even to viewers who do not play the game, making it a useful shorthand for a sudden escalation in gameplay videos and memes.