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• Fallout New Vegas: Easter Egg: Underwater Poker OneBursts. Unsubscribe from OneBursts? Cancel Unsubscribe. Subscribe Subscribed Unsubscribe 38.
• The entrance to the cave is underwater, below a big ledge. At the top of that ledge is a small fishing boat, partially above water with the majority below the waterline.

Vault exterior Vault 22 is one of the Vaults constructed by the Vault-Tec Corporation in the Mojave Wasteland. It is located south-southwest of the Griffin Wares sacked caravan and directly west of The Thorn. By 2281, the Vault home to a variety of plantlife and wild animals, most notably giant mantises. Humans, the intended occupants, are nowhere to be seen. The Vault is located south-south.

The Aquaboy and Aquagirl perks allow you to breathe underwater, remove radiation damage while swimming, and may even make you undetectable while submerged.

Aquaboy is a perk in Fallout 4 and Fallout 76.

Effects

With the first rank of the Aquaboy perk, the player character no longer takes radiation damage when swimming, and gains the ability to breathe underwater. The second rank of the perk allows the player character to submerge themselves completely in a body of water to disappear from sight completely, handy for losing hostile opponents.

New Vegas Fallout Wiki