Fishbowl helmet

The fishbowl helmet is obtained from Murphy during the Freeing Pirate Pete subquest of the Recipe for Disaster quest in exchange for a fishbowl. After the quest it can be obtained for free. It is used, along with the diving apparatus, to dive underwater to the Mogre Camp.

In The Great Brain Robbery, this helmet is used with the diving apparatus, to dive in the underwater tunnel on Harmony Island. It is useful in the underwater area of Fossil Island as well.

If you lose the Fishbowl helmet, Murphy will give you a new one if you choose the diving option when talking to him.