The boat rocks gently as the Cabo shoreline slides away—sunlight skimming the surface, pelicans tracing the wake. On deck, a small group listens to a PADI instructor demonstrate mask clearing and regulator recovery; the language is precise, calm. The air tastes like salt and sunscreen. Minutes later, the group eases into a shallow, purpose-built training pool where buoyancy and breathing get reduced to essentials: slow inhale, slow exhale, trust the equipment. Then, the engines hum and the coastline comes into focus—the famous Land's End arch, a granite gate where Pacific and Sea of Cortez meet.