A deep-sea diver must enter a hyperbaric decompression chamber after a dive to prevent or treat decompression sickness, or “the bends.” This condition happens when a diver surfaces too quickly, causing nitrogen bubbles to form in the bloodstream due to rapid pressure changes. These bubbles can lead to serious symptoms like joint pain, dizziness, or even paralysis. The chamber safely re-pressurizes the diver, allowing nitrogen to leave the body gradually while breathing pure oxygen, reducing the