The title of this article is conjectural; an official name for the article's subject has not been found, so it has been given a fitting title by the editors. If an official name is found, then the article should be moved to its appropriate title.

This article is about the submersible In Mario Kart 8 and Mario Kart 8 Deluxe. For the transformation of Yoshis after touching a Morph Bubble, see Submarine Yoshi.
Not to be confused with Subwarine.
Stamp of a Submarine, from Mario Kart 8.
The Submarine stamp from Mario Kart 8

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.