Presentation of the monitor and explanation of security. Delivery of the material. We leave and cross the beach of Talamanca passing over the famous Posidonia Oceanica meadows. Leaving the bay, and if the sea allows it, we will visit some caves where the bravest can bathe. Then we will continue along the cliffs of Cap Martinet where there are precious geological formations to reach Cala Roja, a pebble beach, difficult to access from land, where we can snorkel, bathe or simply rest. Later we will return.