CASA of the Coastal Bend’s mission is to advocate for the best interest of children in Nueces and Aransas County foster care. A CASA volunteer is a consistent presence in a child’s life during the process of the case. CASA of the Coastal Bend’s mission is to advocate for the best interest of children in Nueces and Aransas County foster care. Our trained Court Appointed Special Advocates (CASAs) gather information and evaluate the needs of the children. These volunteers work collaboratively with families and other associated professionals to provide valuable information to the judge. A CASA volunteer is a consistent presence in a child’s life during the process of the case.