They appear to be very similar to bone armor lurkers but much shorter and stout, though share the same traits such as blue skin, bone armor, and similar physical structure. They are enclosed in a wooden cage that is spiked, where they will then spin around inflicting harm on intruders.
The only way to destroy these lurkers is to jump and dive (+), attacking their vulnerable spot which is on top of their cage, not supported by any formidable structure or defensive spikes. It is easier to destroy these lurkers when they are stationary, as they pause for a moment out of dizziness after spinning for about ten seconds. They can then be easily destroyed, though, they are usually accompanied by more of their own.