Travertine, a rock formed by the deposition of calcium carbonate dissolved in water, was often used as a building material in this region, but today it is strictly protected and its extraction is prohibited. Nevertheless, this natural phenomenon of Krka National Park continues to live and grow in the very heart of Šibenik. In addition to being an attraction, it is also an indicator of environmental purity, as travertine can only grow under strictly specific conditions in unpolluted water. Along with algae and bacteria, aquatic mosses are of exceptional importance for travertine, and the appearance of the travertine itself depends on the type of moss. Over time, the fountain has gained more inhabitants - red-eared and yellow-bellied sliders (lat. Trachemys scripta) and freshwater fish, most notably the goldfish (lat. Carassius auratus). Some of them are former pets that their owners could no longer keep in aquariums, and as invasive species, they must not be released into the wild. Thus, the fountain has also become a kind of animal sanctuary.

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