Editorial: Coral reefs in the anthropocene – reflecting on 20 years of reef conservation UK by Andradi-Brown, DA, Banaszak, AT, Frazer, TK, Gilchrist, H, Harborne, AR, Head, CEI, Koldewey, HJ, Levy, E, Richards, K, Short, R, Sweet, M, Teleki, K, Voolstra, CR, Wilson, B, Wood, E, Yarlett, RT, Curnick, DJ