Ytre Hvaler National Park consists of muddy seabeds and rocky seabottoms with its rich underwater ecosystem containing corals and kelp forest. Land areas have a varied plant and animal life with many Red Listed species, coastal woodland shaped by the wind, and rocks worn smooth by waves and ice. The Ytre Hvaler National Park was set up to preserve a distinctive, large and relatively pristine area in southeast Norway with complete ecosystems on land and in the sea. The National Park is home to unique deep-sea coral reefs and is an important area for invertebrates, fishes, sharks, seals, and seabirds. Mission Blue declared Koserrfjorden/Yttre Hvaler National Park a Hope Spot in 2013 aiming to protect the species and habitat diversity.