The image displays a rectangular glass aquarium positioned on a colorful laminated educational mat

The image displays a rectangular glass aquarium positioned on a colorful laminated educational mat. The aquarium contains greenish-tinted water with several small fish identified as guppies, exhibiting orange, black, and dark coloration. Within the aquarium, live aquatic plants with broad green leaves are clustered on the left, displaying some white speckling on their surfaces, consistent with mineral deposits or algae. Finer, lighter green aquatic plants are visible in the mid-background. The substrate consists of light-colored, small gravel in the foreground, transitioning to a darker, finer gravel beneath. Decorative elements include a brown, textured ornament resembling a submerged log or rock formation on the left side, and a separate section of dark, smooth river stones on the right. An artificial jellyfish decoration, featuring a translucent green domed cap with white and green trailing tentacles, is situated on the right side above the dark stones. A black submersible heater is partially visible on the far left. Air bubbles are present within the water column. Above the water line, a glass lid partially covers the top of the tank. The water level is slightly below the rim. Against the background is a pale pink wall. A black electrical cable and a portion of a light fixture are visible in the upper left. To the upper right, a light-colored map with brown outlines is visible, showing parts of South America, including text labels for "Brazil," "South Pacific Ocean," and "Galapagos Islands." Below the aquarium, the multicolored laminated mat displays multiplication tables, including sections for "x7," "x8," "x9," and "x10," with associated equations. A dark fabric object is visible in the lower right corner, extending partially onto the mat. The location in the city of Varna, Bulgaria, cannot be visually confirmed from the provided image data.