Why Just One? Online

Paul Watson - Self (Sea Shepherd Conservation Society), Brett Bradley - Self, Randall Arauz - Self, Ben Harris - Self (Operation Jairo), Alvaro Sagot - Self (environmental attorney) (as Álvaro Sagot) , David Hance - Self (Sea Shepherd Conservation Society), Vanessa Lizano - Self (Costa Rica Animal Rescue Center), Marielos Morice - Self (Costa Rica Animal Rescue Center) (as Marielos Morice Poveda) , Richard Whitecloud - Self (Sea Turtle Oversight Protection), Mauricio Alvarez - Self (Fecon), Jairo Mora Sandoval - Self (murdered activist) (archive footage) , Ligia Fallas - Self (Frente Amplio, Costa Rica), Alex Shopov - Self (Operation Jairo), Amber Masters - Self (Operation Jairo), Kirt Rusenko - Self (Gumbo Limbo Nature Center)