The 59th annual Arts Festival on the Common continues Sunday, as does an exhibit of four giant cardboard sculptures of imaginary animals created by 18 high school students from around the region. “The Kingdom of the Animorphs” will be on display at the South Shore Arts Center through July 15. The menagerie of imaginary creatures includes the “Mamooffe,” a 17-foot-tall combination of woolly mammoth, giraffe, and moose, and the “Cheellamalo,” a two-headed mash-up of cheetah, llama, and buffalo. Students from nine high schools were selected by their art teachers to work, starting in February, on the project over six Saturdays. Details about the project and the students will be included in a display at the arts festival, which runs Sunday until 5 p.m. on Cohasset Common. The South Shore Art Center, located at 119 Ripley Road, is open Monday through Friday, 10 a.m. to 5 p.m.; Saturday from 10 a.m. to 4 p.m.; and Sunday from noon to 4 p.m.