Oxygen Supply

Oxygen Supplies are a type of gear that allow Lara to remain in zero oxygen.

Tomb Raider: Chronicles
In the Level Deepsea Dive, Lara makes use of a Extreme Depth Suit.

Tomb Raider: Underworld
Tomb Raider Underworld Lara Croft makes use of a diving tank in levels that feature extensive underwater exploration.

Mission Appearances:
 * Mediterranean
 * The Path to Avalon
 * Niflheim
 * The Norse Connection
 * God of Thunder
 * Realm of the Dead
 * Andaman Sea
 * Rituals Old
 * Arctic Sea
 * Helheim
 * Yggdrasil
 * Out of Time

Rise of the Tomb Raider
Lara acquires a rebreather from a dead Trinity soldier. In addition to using it for swimming, Lara will also wear in in areas full of gas.

Trivia

 * When using the rebreather, bubbles will be expelled when Lara exhales. in reality, a rebreather is designed to recycle the same breath and thus eliminate bubbles.