The Polar Sea was a location on planet Magnus. The heroes had to escape it. The area has few creatures strong enough to survive in the harsh climate. Besides a few types of Critters, the area is home to Grungoths, Alpha Grungoths and Flabberfish. There is also a large presence of Minions here who hunt for Grungoths.
- Middle of Nowhere
- Polar Ice Floes
- Valley Floor
- Winter Wonderland - Escape the Polar Sea. (Bronze, Hidden)
- The Intergalactic Museum of History had a portrait of Polar Sea in one of their rooms, along with portrait of Terawatt Forest and two statues of Nevo Binklemeyer and Frumpus Croid.
- Ratchet & Clank: All 4 One (first appearance)