Sea Lab

The Sea Lab is a craftable Structure in the Shipwrecked DLC. It requires 4 Limestone, 2 Sand and 2 Electrical Doodads to craft, and an Alchemy Engine to prototype. It works similar to an Alchemy Engine which means it can be used to unlock Crafting recipes of the sciene 2 tier, but it can only be placed on the Ocean.

Trivia

 * The Sea Lab was added to the Shipwrecked DLC more than a year after its official completion in an yet unnamed beta update.