Why is Mediterranean sea so blue?

The water in the Mediterranean does not have enough nutrients to support the growth of sea algae, so it stays in its natural blue color. This is the main factor.



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Water is exchanged at the slowest of rates making the med as clear as a swarovski crystal. Limited water exchange = limited food for tiny organisms called phytoplankton aka algae, and it's these little dudes who play the lead role in water clarity. The Mediterranean is classified as “oligotrophic”.

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The Weddell Sea has been claimed by scientists to have the clearest waters of any ocean in the world. Described by a historian as “the most wretched and dismal region on earth”, due to the flash freezes that caught Shackleton's ship, its clarity is only belied by the sheer depth of the ocean below.

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Top 5 Clear Water Beaches in the Mediterranean
  1. 1) Spiaggia dei Conigli, Lampedusa, Italy. ...
  2. 2) Cala Macarelleta, Menorca, Balearic Islands, Spain. ...
  3. 3) Navagio Beach, Zakynthos Island, Greece. ...
  4. 4) Nissi Beach, Aya Napa, Cyprus. ...
  5. 5) Blue Lagoon, Comino Island, Malta, Europe.


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The Mediterranean Sea looses its water These are the best conditions for wonderful summer holidays at the beach, but also for a high rate of water evaporation. The Mediterranean Sea looses in this way nearly one meter of its water height every year! This evaporating water leaves all its salts in the remaining water.

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