Daryl Hannah as Brook Wilder

John Schneider as Daniel Wilder

Armand Assante as Hamilton Lux

F. Murray Abraham as Professor Bill Girdler

Roark Critchlow as Professor Phillip Wilder

Heather McComb as Amy Zuckerman

John Enos III as Kane Markus

Alan Fudge as Pastor Herman

Gene Davis as Sheriff Dexter Murray

Brent King as Clint Duran

June Squibb as Bess Wilder

Raymond O'Connor as George Banks

Elisa Donovan as Brenda

Mimi Michaels as Kim Wilder

Jacleen Haber as Tia

Darcy Rose Byrnes as Heather

Tiffany Hines as Michelle

Karen Strassman as Heather's Mom

Paydin LoPachin as Stacy

Nicole Gabriella Scipione as Alice

Patsy Fitzgerald as Kayak Girl

Jenn Gulotta as Medical Intern

Jessica Lynn Sadowski as Shark victim

Willie C. Carpenter as Mayor

Mel Fair as Heather's Dad

Frank Sivero as Davey Ballew

Jim Hanks as Nick Atkins

E.J. Callahan as Al Maynard

David Thomas Jenkins as Weezer

Tony Clarno as Lifeguard

George Hobbs as TV News Reporter

Bob Bledsoe as Security Guard

Chet Grissom as Greg

Rick Scarry as Doctor Taylor

Timothy Lynch as Weaver

Shane van Dyke as Chris

Kurt Meyer as Bob the Tow Truck Driver

Solly Assa as Dirk Wilder

Tom Mesmer as Innertube Victim

Victoria Chalaya as Reporter (uncredited)