http___www.istra.hr_hr_atrakcije-i-aktivnosti_prirodne-atrakcije_flora-i-fauna_1.xml
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Flora and fauna Protected bivalves of the Istrian seabed Did you know that a clam can weigh up to 200 kg and reach a length of one metre!? Of course, we're talking about the Giant Clam - the largest bivalve in the world – which is but one of some 20 thousand bivalve species living in seas around the world. The Adriatic Sea is rich in fish and other marine life, and it is home to many different types of bivalves, as well as to 200 protected species widely known for their beauty. Seven protected species inhabit the seafloor along the coast of the Istrian peninsula. These are: - the noble pen shell - the brittle pen shell - the European date mussel - the zoned miter - the common piddock - the cowrie shell - the helmet tun or giant tun These species deserve to be protected and preserved not only because of their beauty but also because they contribute to the rich diversity of the Adriatic seabed. Bivalves are molluscs; they are called bivalves because their calcareous shells consist of two parts called valves. They are one of the oldest species of animals, a fact confirmed by a fossil record consisting of some 15,000 fossil species. Bivalves are sedentary for most of their lives, never leaving their home or the seafloor. New bivalves grow from larvae that use fish as hosts, attaching themselves to the fish’s fins or gills; when grown, they break free from the host and drop to the bottom of the sea. Like most animals they have eyes, a mouth, a stomach and even a foot that holds them to the seafloor while they search for a home and food. Bivalves often bury themselves in the soft seabed, while some, like the European date mussel, bore holes in soft rocks. The Nature Protection Act regulates the protection of strictly protected species, which include bivalves. It is prohibited to remove them from nature, intentionally capture or kill them, intentionally damage or destroy their development stages, or destroy their reproducing grounds. The Nature Protection Act also prohibits the keeping, transport, sale, and trading or offering for sale or trade of strictly protected species, either living or dead.
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Flora i fauna Zaštićeni školjkaši istarskog podmorja Možda niste znali, ali školjka može doseći i 200 kilograma težine te metar dužine! No, riječ je o onoj najvećoj na svijetu - školjkači, tek jednoj od 20 tisuća školjaka koje žive u svjetskim morima. Jadransko more, bogatom ribom i drugim morskim bićima, uz brojne raznovrsne školjkaše, krije i 200 zaštićenih vrsta poznatih po svojoj ljepoti. U morskim dubinama uz istarski poluotok obitava sedam zaštićenih vrsta: - periska - periska dubinska - prstac - prugasta povezača - kamotočac - zupka - puž bačvaš Osim zbog ljepote, posebno ih treba štititi i čuvati jer su zaslužni za bogatstvo jadranskog podmorja. Školjkaši su mekušci koji su dobili ime po svojoj vapnenastoj ljušturi, a predstavljaju jednu od najstarijih vrsta životinja, čemu svjedoče ostaci 15.000 njihovih fosilnih vrsta. Školjke većinu života provode sjedilački, ne odvajajući se od svojeg doma i morskog dna. Nova školjka nastaje iz ličinke koja se smješta na peraju ili škrge ribe gdje se dalje razvija, dok odrasla školjka ne izađe iz čahure i padne na dno mora. Poput većine životinja, imaju oči, usta, želudac, pa čak i stopalo kojim se pričvršćuju za tlo u potrazi za domom i hranom. Školjke često žive ukopane u mekano morsko dno, dok neke, poput prstaca, buše rupe u mekim stijenama. Zakon o zaštiti prirode regulira zaštitu strogo zaštićenih vrsta, među njima i školjkaša. Zabranjeno je iz prirode uzeti, namjerno uhvatiti ili ubiti, namjerno oštetiti ili uništiti njihove razvojne oblike, kao i uništavanje područja njihova razmnožavanja. Zabranjeno je i držanje, prijevoz, prodaja, razmjena te nuđenje na prodaju ili razmjenu živih ili mrtvih jedinki iz prirode strogo zaštićenih vrsta.