Visitors look at a blacktip reef shark and leopard shark at the Aquarium Pula
Visitors look at a blacktip reef shark and leopard shark at the Aquarium Pula, Croatia, July 26, 2018. Housed in a more than 130-year-old fort in Croatia, Aquarium Pula boasts species from the Adriatic as well as tropical marine zones and freshwater habitats. From seahorses delicately entwining themselves in the seagrass to the other-worldly jelly fish drifting in the deep blue water, the aquarium is home to around 250 species in 100 pools and tanks and attracts some 125,000 visitors a year. Picture taken July 26, 2018. REUTERS/Antonio Bronic