The Hawaiian monk seal (Neomonachus schauinslandi) is endemic to the Northwestern Hawaiian Islands and is featured on the reverse of the Hawaii state quarter. The seal was first discovered in the 19th century and is one of the most endangered species of seal in the world. The Hawaiian monk seal is protected by the Endangered Species Act and is considered to be a threatened species. The seal is characterized by its dark brown or black fur and its long, slender body. Hawaiian monk seals are predators that feed on fish, squid, and crustaceans. They typically live in shallow waters near coral reefs and are known to be solitary animals. The Hawaiian monk seal is a symbol of Hawaii's unique wildlife and is a reminder of the importance of protecting endangered species.