Balearic Islands in the insular council of Mallorca; the three other insular councils are not subdivided into separate comarques, but are themselves assimilated each one to a comarca covering the same territory as the insular council. These nine comarques are then subdivided into municipalities ("municipis"), with the exception of Formentera, which is at the same time an insular council, a comarca, and a municipality. Note that the maritime and terrestrial natural reserves in the Balearic Islands are not owned by the municipalities, even if they fall within their territory, but are owned and managed by the respective insular councils from which they
Largest organisms over . The largest organism in the world, according to mass, is the aspen tree whose colonies of clones can grow up to five miles long. The largest such colony is Pando, in the Fishlake National Forest in Utah. Another form of flowering plant that rivals Pando as the largest organism on earth in breadth, if not mass, is the giant marine plant, "Posidonia oceanica", discovered in the Mediterranean near the Balearic Islands, Spain. Its length is about . It may also be the oldest living organism in the world, with an estimated age of 100,000 years. Green algae are