Three biological specimens are preserved and displayed in glass containers on a wooden surface within a facility in Plovdiv, Bulgaria

Three biological specimens are preserved and displayed in glass containers on a wooden surface within a facility in Plovdiv, Bulgaria. On the left, a small cylindrical glass jar with a dark, possibly sealed cap holds a single, reddish-brown seahorse specimen, oriented vertically. Below it, a rectangular glass jar with a dark, possibly sealed lid contains a pale, dissected frog specimen, mounted against a light-colored backing. An aged, rectangular label affixed inside this jar displays the text 'водна жаба' and 'Rana esculenta'. To the right, a tall cylindrical glass jar encases a ventrally dissected reptile specimen, likely a lizard, positioned with its head upwards and its tail curled at the base. Prominent internal organs appear reddish-brown, contrasting with the gray, scaly exterior of the specimen. All specimens are immersed in a clear liquid. The immediate foreground shows a dark screw head embedded in the wooden surface. The background is blurred, revealing wooden shelving units containing assorted laboratory glassware and books, indicative of a scientific or educational environment.