What is the significance of safety stops during ascent for divers?

Safety stops during ascent are significant because they provide additional time for the body to off-gas excess nitrogen absorbed during the dive. As divers descend, their bodies absorb nitrogen from the breathing gas under pressure. If they ascend too quickly, this nitrogen can form bubbles in the bloodstream or tissues, leading to decompression sickness (DCS). By including a safety stop, typically at around 15 to 20 feet for about three minutes, divers allow nitrogen to be released slowly and more safely from their bodies. This gradual release minimizes the risk of developing DCS, making it a critical part of safe diving practices.