The ninth edition of the festival includes screenings aboard a 35-metre boat.
The programme includes animation workshops for children and students, concerts, DJ sets, panels and talks with authors, a virtual reality cinema, and trips aboard the festival boat.
Organisers say their competition of animated music videos Supertune features the highest number of videos when compared with world festivals, 54, by artists such as The Beatles, De La Soul, Mitski, Run The Jewels, U2 and Beck.
Since Sibenik is known for the International Children's Festival, Supertoon pays special attention to the children's programme selection.
Supertoon also features documentaries focusing on migration and identity, and films on the pollution of the world's oceans and seas with microplastics.
Entry to all screenings on land are free.