The ocean around Leonida is full of secrets. Underwater exploration in GTA 6 is a full mini-game with treasure, marine life, and unique missions. This guide covers oxygen management, treasure locations, and the underwater vehicles available.
Oxygen Management
Oxygen is the most important resource underwater. The default oxygen tank gives you:
- 30 seconds underwater at the surface
- 60 seconds underwater at 30 meters
- 90 seconds underwater at 60 meters
- 120 seconds underwater at 100+ meters
You can extend oxygen by upgrading your tank:
Standard Tank (free)
30 seconds at the surface.
Extended Tank ($2,500)
60 seconds at the surface.
Pro Tank ($15,000)
120 seconds at the surface.
Master Tank ($50,000)
180 seconds at the surface. Required for the deepest dives.
Rebreather ($100,000)
Infinite oxygen. Required for the abyssal treasure hunt.
Treasure Locations
There are 30 underwater treasures in Leonida. They are categorized by depth:
Shallow Treasures (0-30 meters)
- 10 treasures
- Mostly gold coins and small items
- Reward: $5,000 to $20,000 per treasure
Mid Treasures (30-60 meters)
- 10 treasures
- Mostly gold bars and jewelry
- Reward: $20,000 to $50,000 per treasure
Deep Treasures (60-100 meters)
- 7 treasures
- Mostly rare artifacts and lost cargo
- Reward: $50,000 to $100,000 per treasure
Abyssal Treasures (100+ meters)
- 3 treasures
- Legendary artifacts
- Reward: $500,000 per treasure plus unique items
The deepest treasure requires the Rebreather and is located at 250 meters depth.
Marine Life
The ocean is home to a variety of marine life:
Common
- Fish (multiple species)
- Jellyfish
- Sea turtles
- Stingrays
Uncommon
- Dolphins
- Sharks
- Octopus
- Manta rays
Rare
- Whale sharks
- Orcas
- Giant squid (only at night)
- Megalodon (rumored, only during storms)
Rare marine life can be photographed for the Wildlife Photographer trophy.
Underwater Vehicles
There are three underwater vehicles in GTA 6:
Sonar Sub ($150,000)
A small submersible that can dive to 100 meters. Armed with sonar and a single torpedo.
Kraken Sub ($500,000)
A medium submersible that can dive to 200 meters. Armed with torpedoes and depth charges.
Leviathan Sub ($2,500,000)
A large submersible that can dive to 500 meters. Armed with missiles and miniguns. Required for the abyssal treasure hunt.
Underwater Missions
There are 5 underwater missions in the main story:
The Sunken Yacht (Chapter 2)
Recover valuables from a sunken yacht off Ocean Beach. Reward: $50,000 plus a unique outfit.
The Smuggler's Wreck (Chapter 3)
Explore a sunken smuggler ship in the Leonida Keys. Reward: $100,000 plus the Master Tank.
The Naval Base Heist (Chapter 4)
Infiltrate an underwater naval base. Reward: $250,000 plus the Kraken Sub.
The Treasure Fleet (Chapter 5)
Find a sunken Spanish treasure fleet off Ambrosia. Reward: $1,000,000 plus a unique vehicle.
The Abyss (Chapter 6)
Reach the deepest point in Leonida waters. Reward: $2,500,000 plus the Leviathan Sub.
FAQ: Underwater Exploration
Q: Do I need scuba gear to dive?
A: No. Free diving is available but limited by oxygen.
Q: Can I take a co-op player underwater?
A: Yes. Both players can dive together and split the rewards.
Q: Are there sharks that attack divers?
A: Yes. Sharks are aggressive in certain areas. Use the Sonar Sub for protection.
Q: Can I breathe underwater indefinitely?
A: Only with the Rebreather.
Q: Are there underwater easter eggs?
A: Yes. There are several, including a sunken Statue of Liberty replica off Ocean Beach.
With these tools and tips, you can explore the deepest parts of Leonida's ocean. Save up for the Rebreather, locate the deepest treasures, and unlock every underwater mission.
Underwater Combat
Some underwater treasures are guarded by hostile marine life. Combat tactics:
Sharks
Sharks are the most common underwater threat. They have:
- High damage bite attack
- Quick recharge
- Area denial by circling
Tactics:
- Use the Sonar Sub for protection
- Stay close to cover (coral, shipwrecks)
- Attack from behind for bonus damage
Giant Squid
The Giant Squid only appears at night. It has:
- Tentacle grab attack
- Ink cloud for area denial
- Massive health pool
Tactics:
- Use the Kraken Sub for protection
- Attack the tentacles first to disable the grab
- Finish with a torpedo to the head
Megalodon
The Megalodon only appears during storms. It is the most dangerous underwater enemy.
- Massive bite attack
- Charges at high speed
- Can destroy small submersibles in one hit
Tactics:
- Use the Leviathan Sub for protection
- Keep distance and use missiles
- Stay deep โ Megalodon prefers shallow water
Underwater Photography
The Underwater Photography trophy requires photographing every marine life species:
Common Species
- Fish: 20 species to photograph
- Jellyfish: 5 species to photograph
- Sea turtles: 3 species to photograph
- Stingrays: 3 species to photograph
Uncommon Species
- Dolphins: 5 species to photograph
- Sharks: 5 species to photograph
- Octopus: 3 species to photograph
- Manta rays: 3 species to photograph
Rare Species
- Whale sharks: 1 species to photograph
- Orcas: 1 species to photograph
- Giant squid: 1 species to photograph
- Megalodon: 1 species to photograph (if real)
The Underwater Photography trophy requires the Rebreather and the Master Camera.
Final Tips
- Start with shallow treasures. They are the easiest.
- Save the abyssal treasures for end-game. They require the Rebreather.
- Use the Sonar Sub for protection against sharks.
- Use the Kraken Sub for protection against giant squid.
- Use the Leviathan Sub for protection against Megalodon.
- Always carry a backup oxygen tank.
- Photograph rare marine life for the trophy.