Question: where are all the jiggies in clanker cavern?
Answer: In the Pipe: Underwater, through one of the pipes to the left of Clanker. ... 
Raise Clanker: Follow the chain weighing down Clanker to the very bottom of the cavern. ... 
Defeat the Mutie-Snippets: Defeat the Mutie-Snippets in the Toxic Waste Area; this area is through an underwater green pipe directly behind Clanker.