The deep ocean and the darkness carry secrets, and they may bring fear for many. What, and who, hides in the dark, cold and deep ocean? The Arctic polar night has for a long time been almost inaccessible - and it is still not an easy place to carry out research. Not only has it remained inaccessible, the scientific literature has generally dismissed the ocean during the polar night as a marine desert. No light - no life. We have generally assumed that the organisms shut down and remain inactive in wait of the spring. Until now. In January, a new exhibition in the Polar museum (Polarmuseet) in Tromsø will have this topic as the main theme. In the meantime you can find out more in a recently published outreach article in Aftenposten (Norwegian only).