Dermis Turtles are small, peaceful turtle Rahi with almost impenetrable silver shells. They are good weather indicators: they would retreat into their shells if a storm was on the way. Rahaga Gaaki said they also had a musical cry that the Ga-Matoran on Metru Nui had gotten used to and even enjoyed. They can use their sharp silver tusks for defense.
- The Dermis Turtle was designed for the BIONICLE: Rahi Building Contest, and was picked a winner. Greg Farshtey brought the turtle and the other contest winners into BIONICLE canon.