Tabarca in terms of marine ecology. Therefore, waters around Tabarca were declared a Marine reserve in 1986, the first of its kind in Spain. This status was mainly granted due to its submarine posidonia prairie, which is the largest in the Spanish Mediterranean and has an extraordinary ecological value in terms of marine fauna and flora. In order to both enhance the marine biodiversity and protect it from fishing, an artificial reef was laid near the island by the Marine Reserve authorities. Tabarca Tabarca (, ) also known in Valencian as "Nova Tabarca" and "Illa Plana", and in Spanish as "Nueva
La Palma tsunami, so it would only be a megatsunami locally in the mid Atlantic. An underwater eruption that began in September 2011 south of the island of El Hierro, gave rise to more speculation about the possibility of a megatsunami. As each island in the archipelago is an independent edifice often several tens of kilometres away from the adjacent island it is geologically impossible that volcanic activity on one island will influence the other islands. El Hierro lies about 100 km south of La Palma, over 100 km south-west of Tenerife. La Gomera – extinct since about 4 million year BP,