After being lured into Whalefall Canyon by a beautiful mandarin fish, Dave has washed up in Heartopia, and he’s in trouble. His oxygen tank has malfunctioned, scattering his diving valve components across the seafloor, and he needs the players to recover them so his undersea adventure can continue. This new collaboration runs until 7 September. During that time, players can collect Diving Valves while exploring the ocean map. They also have a chance at earning extra Diving Valves during ocean cleanup activities, or while gathering ocean collectibles. Those Diving Valves can then be redeemed at the dedicated Event Shop for a range of crossover rewards, including Dave’s signature blue and yellow wetsuit and oxygen tank backpack, plus additional crossover-themed clothing and accessories, furniture items, and recipes that bring some of Bancho Sushi’s signature dishes to Heartopia.