Brief synthesisIbiza, Biodiversity and Culture, is a serial, mixed natural and cultural World Heritage property bringing together exceptional archaeological and historic sites on the islands of Ibiza, adjacent to a marine reserve of global importance. The property’s natural values are characterised by the best-conserved marine meadows of Posidonia Oceanica (Neptune Grass) in the Mediterranean. Neptune Grass meadows provide an oasis for a rich marine biodiversity including a number of endemic and threatened species. The Ministry of Environment of the Balearic Islands Government is responsible for managing the park, including monitoring of the Neptune Grass meadows and marine biodiversity. The primary objective of these plans is to conserve marine biodiversity and, in particular, the Neptune Grass meadows.