海怪鑽子（Quacken Drill） is an Item exclusive to the Shipwrecked DLC. It can be crafted from the Science Tab, is prototyped with an Alchemy Engine, and requires 1 Quacken Beak, 1 Gears and 2 Electrical Doodads to craft. Quacken Drills can be planted to create a Tar Slick, allowing one to farm Tar at their base. Quacken Drills can be planted anywhere in the Deep or Medium Ocean.
- The Quacken Drill was added to the Shipwrecked DLC more than a year after its official completion in the Home Sea Home update, after being tested in a beta branch for several months.
- Despite the image for the Quacken Drill having a bamboo handle, no bamboo is needed to craft it.