Underwater view of a fish swimming over rocks and vegetation in the clear green waters of Rastoke, Croatia

underwater fish rastoke croatia rocks vegetation clear water green nature aquatic scenic peaceful natural environment water tranquility underwater life stream creek wildlife ecosystem serene habitat aquatic life fresh water submerged flowing water calm natural beauty underwater scene lush pristine wilderness riverbed aquatic vegetation fish habitat streambed river underwater world flora fauna biodiversity exploration diving snorkeling observation clear stream wild animals