Blue water lily plants (Nymphaea nauchali) that had originated in the Botanic Garden were again relocated last March to the pond in Tel Afek. The blue water lily, which had disappeared from the Yarkon sources decades ago, has been reintroduced into the national park by the Yarqon River Authority team, thanks to several specimens that had been kept and cultivated in the Botanic Garden of Tel Aviv University and planted in an artificial pond. The rehabilitation project began about a decade ago and currently continues with the transfer of plants to additional ponds in the Yarkon national park. The Tel Afek pond, which was designed to reconstruct the once characteristic landscape of the Yarkon sources, is currently a refuge for several endangered species. A short video presents the water lily