Services and supports for individuals with intellectual and developmental disabilities (I/DD) and their families. The Arc Nature Coast is a 501-C-3, non-profit, charitable organization providing services and supports for adults with intellectual and developmental disabilities and their families in Hernando, Pasco & Sumter Counties, FL. Our mission: to provide individually tailored quality supports and advocacy for persons with intellectual/developmental disabilities and their families to promote their self-determination and inclusion in community life.