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Waterspouts are objects in Mario & Luigi: Superstar Saga and Mario & Luigi: Superstar Saga + Bowser's Minions. They are swirling vortexes of water that are formed due to underground volcanic activity. They appear only in Oho Ocean. They act as underwater counterparts to whirlwinds, though instead of sending Mario and Luigi straight forward, these send them high up if they enter it with a Spin Jump, slowly descending downwards afterwards. As soon as they enter a watersprouts, they are immediately launched out, unlike whirlwinds, which trap the brothers inside them until they input a direction on .
While Waterspouts are not present in Mario & Luigi: Bowser's Inside Story or its remake, Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey, similar vortexes do appear in various locations within those games. Using the Spin Jump and/or the Balloon Jump techniques on them, Mario and Luigi can be sent upwards.