The recommended depth and time for a safety stop on dives is:

A safety stop is an important practice in scuba diving, typically used to allow excess nitrogen absorbed during the dive to be eliminated from the body before ascending to the surface. The recommended depth for this stop is generally around 15 feet, where divers can remain briefly to safely reduce their risk of decompression sickness.

The appropriate duration for this safety stop is commonly accepted to be between 3 and 5 minutes. This timeframe is sufficient to allow the body to off-gas nitrogen effectively while providing divers with an opportunity to monitor their physical condition and equipment before completing their ascent.

Therefore, the combination of 15 feet in depth and a duration of 3 to 5 minutes serves as a practical guideline in diving protocols to enhance diver safety and minimize the risks associated with rapid ascent.