卡特里娜-宝登 Katrina Bowden (饰演 Shelby
) 克里斯托弗-洛伊德 Christopher Lloyd (饰演 Mr. Goodman
)
克里斯-泽尔卡 Chris Zylka (饰演 Kyle
)
丹妮尔-帕娜贝克 Danielle Panabaker (饰演 Maddy
)
文-瑞姆斯 Ving Rhames (饰演 Deputy Fallon
)
加里-布塞 Gary Busey (饰演 Clayton
)
艾莉森-麦克 Allison Mack (饰演 Kara Jones
)
杰奎琳-玛克林尼丝-伍德 Jacqueline MacInnes Wood (饰演 Alex
)
大卫-科恩查内 David Koechner (饰演 Chet
)
让-卢克-比洛多 Jean-Luc Bilodeau (饰演 Josh
)
大卫-哈塞尔霍夫 David Hasselhoff (饰演 Himself
)
Meagan Tandy (饰演 Ashley Fallon
)
Paul Scheer (饰演 Andrew 'Drew' Cunningham
)
Elise Neal (饰演 Jenina Fallon
)
Sam Jones III (饰演 Thomas Fallon
)
克鲁-古拉格 Clu Gulager (饰演 Mo
)
Adrian Martinez (饰演 Big Dave
)
科迪-肯尼迪 Cody Kennedy (饰演 Lifeguard Cody
)
Matt Bush (饰演 Barry
)
Naomi Snieckus (饰演 Pearl
)
Shanica Knowles (饰演 Kendra
)
迈克尔-阿尔吉利 Michael Algieri (饰演 Theo Fallon
)
Marta Zolynska (饰演 Bella (as Mia Hope)
)
Paul James (饰演 Travis
)
David Schifter (饰演 Bite Victim's Father
)
Katie Garner (饰演 Lizzie
)
Beth Powder (饰演 Cannonball Girl
)
Jenna Hurt (饰演 Rochelle
)
Alisa Harris (饰演 Hysteric
)
Richard Wes Howren (饰演 Water Park Patron
)
Michael L. Kuhn (饰演 Male Staffer
)
Sheila Brothers (饰演 Bloody Bather (uncredited)
)
Truman Brothers (饰演 Staring Kid (uncredited)
)
Sierra Fisk (饰演 Bethany (uncredited)
)
Beth Gosnell (饰演 Saved Dead Woman (uncredited)
)
Sierra Holmes (饰演 Bather (uncredited)
)
Kathy Sue Holtorf (饰演 Mandy (uncredited)
)
Sylvia Jefferies (饰演 Young Mom (uncredited)
)
Matthew Lintz (饰演 Freckled Boy (uncredited)
)
Livia Milano (饰演 Dying Bikini Girl (uncredited)
)
Joe Montanti (饰演 Water Park Monkey Man (uncredited)
)
Stacy Rabon (饰演 Fearful Woman (uncredited)
)
Michael J Roberts (饰演 Hospital Patient (uncredited)
)
Pat Thomas (饰演 Bather (uncredited)
)
Robert Wilmoth (饰演 Boy discovering corpses (uncredited)
)
Melissa Messmer (饰演 Lifeguard
)
Karen Malina (饰演 Josh's Mom in Hospital
)
Michael Faulkner (饰演 Swimmer
)
Tyler Vivencio (饰演 Luke
)
Melissa Anne Young (饰演 Bikini Girl (uncredited))