Below the reef, three lost relics are waiting. Watch your oxygen, read the currents, and bring your discoveries back to the boat.
Choose one free upgrade for bringing treasure home.
Drag to swim or use WASD / arrows. Burst gives a short shield and uses 1.5s of air. Start with reef treasure, then upgrade at the boat before diving deeper. Return to the boat to bank your bag. A lost dive keeps only banked points. Air caches refill 13s once each. Bank all three relics to win.