What is one of the two actions you must take after exceeding your computer's oxygen limits?

After exceeding your computer's oxygen limits, making a safety stop is a critical action to take. This is because a safety stop allows divers to safely off-gas nitrogen and other substances that have built up in their bodies during the dive. Although the primary concern after exceeding oxygen limits is to avoid further exposure to high partial pressures of oxygen, the safety stop also helps minimize the risk of decompression sickness, which can be a serious concern when managing multiple dive factors.

Taking a safety stop serves to give your body a chance to release excess nitrogen more effectively, even if oxygen management is the top priority after exceeding limits. Surpassing the oxygen limits does not warrant skipping safety stops; instead, it emphasizes the need for cautious underwater practices going forward.

Concerning other actions, surfacing without a safety stop could lead to significant health risks. Cancelling all future dives for the week, while a prudent choice for a diver who has exceeded oxygen limits, is not the immediate action required at that moment. Diving deeper than 30 meters would also be contrary to safe diving practices, particularly after crossing the computer's oxygen limits, as this further increases nitrogen and oxygen exposure risks.