A new trail, beginning at La Plagette in Cap d'Agde, for discovering fauna, flora and easily accessible underwater scenery, in an area originally formed by volcanic activity. The 200m marked path enables snorkellers to pass within reach of 5 types of underwater habitat, between 0 and 5 metres deep.

Independent visits : follow the signposts on land and the marked buoys in the water.

Guided walks : "Exploring the underwater trail" led by a qualified guide and including loan of snorkelling equipment. Awareness raising and discovery of the Mediterranean marine environment. Every day in July and August. Sign up at the ADENA reception on the Plagette beach. Children as of 8 years old. Groups also welcomed in June and September, advance reservation is required.