Yuri Lowenthal Sammy (voice) Gemma Arterton Shelly (voice) Isabelle Fuhrman Hatchling Shelly (voice) Melanie Griffith Snow (voice) Tim Curry Fluffy (voice) John Hurt Grandpa Sammy (voice) Robert Sheehan Ray (voice) Kathy Griffin Vera (voice) Jenny McCarthy Shelly (voice) Gigi Perreau Whale (voice) Eric Unger Hatchling #1 (voice) Kierstin Koppel Female Turtle #2 Pat Carroll Old Female Turtle (voice) Charlie Adler Slim (voice) Cam Clarke Seagull (voice) Alan Shearman Old Turtle (voice) Scott Menville Jacko (voice) W.K. Stratton Fisherman (voice) Pamela Adlon Female Turtle (voice) Al Rodrigo Ben/VW Driver (voice) Charlie Schlatter Hippie (voice) Donald Fullilove Green Turtle (voice) William Brent Hatchling Sammy (voice)