The Croatian Adriatic is one of the most beautiful seas in the world, which with its cleanliness belongs to a group of the cleanest seas in the world. It also contributes to the touristic attractiveness with its colour and transparency which increases the further south one goes out to the open sea. The approximate clarity of the Adriatic is from 20 up to 33 m, and the greatest transparency as a limpid sea indicator is measured out on the open sea and is up to 56 m. The endemic Adriatic plateau - Adriatic seaweed are also fundamental (Fucus virsoides) and the good dolphin as an indicator of limpidity
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