Photo taken on June 27, 2018 shows giant "insects" parading on the street during the opening ceremony of Tobogan Festival in Rijeka, Croatia. The two-week festival includes a series of cultural and educational programs for children. (Xinhua/Nel Pavletic)

Photo taken on June 27, 2018 shows a giant "insect" parading on the street during the opening ceremony of Tobogan Festival in Rijeka, Croatia. The two-week festival includes a series of cultural and educational programs for children. (Xinhua/Nel Pavletic)

Photo taken on June 27, 2018 shows a giant "insect" parading on the street during the opening ceremony of Tobogan Festival in Rijeka, Croatia. The two-week festival includes a series of cultural and educational programs for children. (Xinhua/Nel Pavletic)