Otto Clemens (Narrator), Thomas Eichhorn (), Peter Faerber (), Angelika Lang (), Christina Trefny (), Fahrid Murray Abraham (Narrator), Ana Giro Petersen (Self - Guatemalan Coordinator: Healthy Reefs for Healthy People Initiative), Kenworth Martin (Dive Master & Research Assistant / Self - Fisherman), Melany McField (Self - Director: Healthy Reefs for Healthy People Initiative), William Heyman (Self - Marine Scientist: LGL Ecological Research Associate)