|First appearance||Super Mario Galaxy (2007)|
|Latest appearance||Super Mario 3D All-Stars (2020)|
Robot turtles are Koopa-like platforms found on a planet within Dreadnought Galaxy in Super Mario Galaxy. After Mario floods the planet by luring a Bullet Bill to break a vault, two robot turtles (which were semi-buried in the ground previously) emerge and start moving across the surface of the water. They enable Mario to reach some Star Bits and climb back onto the main body of the planet. The objects' Japanese internal name, which translates to "Mercator Turtle (Ocean)," refers to a method of cartographic projection, seemingly in reference to their elliptical trajectory path relative to the planet's shape.
Mario on a robot turtle
|Super Mario Galaxy||ObjectData/OceanSmallTurtle.arc||Ocean Small Turtle||Small Ocean Turtle|
|Super Mario Galaxy||メルカトル亀（海洋） (via ObjNameTable)||Merukatoru Kame (Kaiyō)||Mercator Turtle (Ocean)|
- Black, Fletcher. Super Mario Galaxy: PRIMA Official Game Guide. Collector's Edition, Roseville, Prima Games, 2007, p. 270