This scenario has a surface of over 67 800 square kilometers including valuable coastal and marine ecosystems for the ecological stability of its flora and fauna.
  In this sense, the specialized Cuban institutions offer its decisive contribution to environmental conservation and an example of this is the National Biodiversity Center.
  Since 2005, the Center revises and updates the National Research of Biological Diversity where the vascular plants are represented with a system for the distribution of water and nutrients in addition to invertebrates and vertebrates.
  In the first group there are mollusks, insects, arachnids and certain parasites that attack animals, while the second are birds, mammals, reptiles and amphibians.
  From the existent knowledge of the variety of species in the Caribbean, it is estimated that it could surpass 10 500 on the island´s marine waters, according to experts.
  At least 30 percent of its marine flora and fauna are still to be discovered, opening perspectives for the investigation of the subject and the possibilities of introducing them to the Cuban diet.
  However, the number could be much higher in comparison with the micro organisms and fauna in deep waters because, due to its little accessibility, have been studied less.
  The distribution of the samples also have not been uniform in the territory because researchers have concentrated in the oldest and stable regions, among them the western mountainous areas, the central and north and southeastern.
  Other areas that have been studied are hills, valleys or the semi arid regions in the southeastern areas. 
  The high number of endemic land biodiversity on the island is due to the geographic isolation of the archipelago and the difference in climate.
  However, the decision to preserve them is a key element to the extreme that its protection is found in the country's Constitution.