The Bottle Lantern is a Light Tab item exclusive to the Shipwrecked DLC. It requires an Alchemy Engine to prototype, and an Empty Bottle and 2 Bioluminescence to craft. It acts as a portable light source which can be wielded or placed on the ground, similar to Lanterns from the base game. If it is placed on the ground, it can be turned on and off at will. Bottle Lanterns can be refueled with Fireflies or Bioluminescence.