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Effect

May be traded to Captain Stern for a Deep Sea Tooth or a Deep Sea Scale.

A device found inside the ABANDONED SHIP.

Ruby Sapphire / Emerald

A device used to search for life-forms in water. It looks too difficult to use.

Firered Leafgreen

A device found inside Sea Mauville.

Sun Moon / Ultra Sun Ultra Moon / Lets Go Pikachu Lets Go Eevee / Sword Shield