Aquae Calidae, Bulgaria Prista on the Danube. Near the baths a road station (statio milliaria) was created with the name Aquae Calidae. The Sanctuary of the Three Nymphs continued to exist next to the station and the Baths, and became known as the Nymphaeum of Anchialos. Under Septimius Severus in 209-211 three years of games and celebrations under the name of Severia Nymphaea took place in the baths. Games also took place in Aquae Calidae under the emperors Geta and Caracalla. Jordanes, who lived in the 6th century, described in his work Getica the incursions of Gothic tribes on the southern Black Sea
Aphanizomenon flos-aquae (dietary supplement) from the air, and water to synthesize proteins, carbohydrates, and lipids. AFA is also able to directly use molecular nitrogen from the air to produce proteins and other nitrogen-containing biomolecules. This ability is widespread in prokaryotes, but unknown in eukaryotes. "Aphanizomenon flos-aquae" as a species has both toxic and non-toxic forms. While benefits have been indicated, toxicity has been shown in some strains of the species "Aphanizomenon flos-aquae", with cylindrospermopsin and saxitoxins present, and microcystins found contaminating AFA dietary supplements. The World Health Organization's "Guidelines For Drinking Water Quality" note Anatoxin-a, saxitoxins, and cylindrospermopsins are present in the Aphanizomenon genus.