From the Super Mario Wiki
Retrieved from "https://www.mariowiki.com/index.php?title=Submarine&oldid=2611557"
A submarine is an obstacle used in Mario Kart 8 and Mario Kart 8 Deluxe. They appear in Water Park in the Sub Coaster attraction, where they are controlled by Nokis. Touching one of them causes the player to receive a Spin Boost.