Greenly Categories Air 94 Water 88 123 Protected Areas so, yes! So, there! 23 Biodiversity releases

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We continue the series with valuable treasures sea shell Pinna nobilis. What makes it special is? It is the largest of the Mediterranean bivalves (can achieve, under certain conditions, the length of a meter). It is found only in the Mediterranean waters. It has been used for centuries as a source of food, but especially its navy silk. It is now a threatened species and is protected great looking by the Habitats Directive (92/43/EEC).
Pinna nobilis has the appearance of a half-opened fan. It is looking to be sold as a souvenir, despite the fact that it is a protected species. great looking Shell surface is rough and is the ideal home for various species of algae and sponges and cavity accommodates crabs and shrimp often.
Pinna nobilis feeds on phytoplankton, which can filter up to 6 liters of water per hour. It lives at depths between 0.5 and 40-60 m, usually with Posidonia great looking oceanic ecosystems or Cymodocea nodosa. Prefers bright areas with clean water.
How Pinna nobilis great looking reproduce? In a very interesting way! It's a hermaphrodite body, releasing both sex cells (gametes) masculine and feminine. After fertilization resulting larvae swimming pool, which after a few days, develop a calcareous shell and fall on the seabed. At this point, the shell begins to produce byssus threads, click into place. In the first year, increasing to 10 to 15 cm. A mature oyster grow to 1 - 1.2 m and can live up to 20 years!
In the nineteenth century, byssus threads (silk-like texture) produced by this shell were dried and then used in the manufacture great looking of gloves, socks and scarves. These products were very popular by the representatives of the wealthier classes, hence the name of Pinna nobilis.
During diving in Greek waters, I had the honor to meet this noble species. Although my collection of shells would have become more valuable with a copy of Pinna nobilis, I took with me a few photographs and unforgettable.
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