What problem could happen if deep sea divers used pure oxygen in their tanks?

Question

Quizplus · Accepted Answer

Pure oxygen is toxic at high pressures, and sudden exposure can lead to convulsions, seizures, and even death. This is known as oxygen toxicity. Deep sea divers using pure oxygen would be at a higher risk of developing this condition. Therefore, the use of mixed gases, such as nitrox or trimix, containing other gases along with oxygen, help prevent oxygen toxicity.

What Problem Could Happen If Deep Sea Divers Used Pure