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A safety stop is an important practice in scuba diving, typically conducted during the ascent phase after a dive, particularly after reaching depths greater than 10 meters (33 feet). The purpose of this stop is to allow nitrogen absorbed by the body to be released safely, reducing the risk of decompression sickness.
The standard duration for a safety stop is commonly around three minutes. This time frame is considered effective for allowing sufficient off-gassing of nitrogen. Divers are encouraged to remain at a depth of about 5 meters (15 feet) during this period. This practice is part of safe diving protocols endorsed by diver training organizations.
While other time frames might be suggested, or used in specific situations, the three-minute safety stop is broadly recognized as a standard guideline for recreational diving, making it the accepted answer in this scenario.