Courtney Mattison is an artist and ocean advocate working to inspire policy makers and the public to conserve our changing seas. She primarily hand-sculpts intricately detailed ceramic sculptural works inspired by the fragile beauty of coral reefs and the human-caused threats they face. 8 juin 2020 · Courtney Hadwin: ALL Performances On America's Got Talent And AGT Champions Talent Recap 12.4M subscribers Subscribe 246K Share 18M views 3 years ago #TalentRecap #AmericasGotTalent #AGT Hey, if.