You landed--by yourself--on a slightly cold, mostly water planet with a few islands here and there located in the habital zone of its solar system. You get off the spaceship and are met with weird penguin-seal-like creatures sliding around on the icy floor. You later find out they're called slideguins and you are on the Ice Island. You don't need a space suit due to the level of O2 in the air. You decide to hop in the water with a diving suit on and explore this world and all the unknown creatures inside.