Coco Bay is a calm, sandy bay dive in Playa del Coco used for training and skill practice, including navigation drills and rescue exercises. Although the bottom is mostly sand, small rocks create micro-habitats that can hold seahorses, nudibranchs, snake eels, pufferfish, rays, turtles, and whitetip reef sharks in the wider bay. It is a beginner-friendly place to practice skills without needing a reef-first profile.