CMAS* scuba diver

CMAS one-star scuba diver (also known as CMAS * diver, or just CMAS *) is the entry-level diving certification for recreational scuba diving issued by the Confédération Mondiale des Activités Subaquatiques (CMAS).

The training programme enables divers to undertake accompanied no-decompression dives to a maximum depth of 20 meters in open water.^[1] Other countries affiliated to CMAS may allow higher limits (for example, the Irish Underwater Council certifies a CMAS * diver to dive to 25m or 30m depending on the dive buddy, both at home and abroad).^[2]

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