Open the dome and put Barnacles into his favorite undersea vehicle. Roll the Gup-D across the floor and push the fin to launch the rescue net. In water, Gup-D floats and you can connect the air hose to Barnacles" scuba tank to make him go up and down in the water. The Octonauts Gup-D Barnacles and Manta Ray Playset has everything you need to explore the incredible undersea world of the Octonauts. For ages 3 years and over.