Posidonia Oceanica Meadows are critical in the fight against climate change. They not only produce oxygen but are significantly more effective in capturing and storing carbon dioxide than terrestrial tropical forests. Posidonia Oceanica meadows are the Lungs of the Mediterranean. Meadows can live for over 100,000 years and have evolved to be crucial in maintaining a healthy marine ecosystem. Thousands of species depend on these meadows but they are being lost at an alarming rate.