Banjo-Kazooie Wiki

Oxygen is a chemical element with symbol O and atomic number 8, that is used in the Banjo-Kazooie series to show how long Banjo and Kazooie can hold their breath underwater or areas that are toxic or heated. In Banjo-Kazooie, the oxygen meter is formed of six blue honeycombs. In Banjo-Tooie and Banjo-Kazooie: Grunty's Revenge, the oxygen meter is shaped as bubbles. In either case, each unit of oxygen represents approximately 10 seconds underwater (with the exceptions of Rusty Bucket Bay and the Winter section of Click Clock Wood in Banjo-Kazooie, which drains oxygen at the same rate on the surface and at double speed underwater).

In Banjo-Kazooie, if Banjo and Kazooie run out of air while underwater, they immediately drown, while in Banjo-Tooie and Banjo-Kazooie: Grunty's Revenge, if they run out of air (whether in clean or polluted water or in the presence of toxic gases, which drain air at a varying rate), they will take constant damage.

In Banjo-Kazooie, Gloop the fish, who is located at the very bottom of Clanker's Cavern, is able to give Banjo and Kazooie air bubbles. These air bubbles replenish two units of oxygen, but cannot give the pair more than their maximum oxygen.

In Banjo-Tooie, if Banjo and Kazooie rescue Roysten from under the boulder in Spiral Mountain, he will reward them with four extra oxygen bubbles.