Hundreds of thousands of live turtles were purchased after each of the previous movies in the franchise, with many later dumped, deliberately killed or flushed down the toilet, the group said on its website. It estimates 90 percent of the animals died.

“We're asking you to save a turtle's life and perhaps even your child's,” co-founders Susan Tellem and Marshall Thompson write in an open letter to parents.

Previous film versions of the lovable "Teenage Mutant Ninja Turtles" story have led to thousands of pet turtles being purchased and ultimately abandoned or killed.

“Unfortunately, children do not realize that real turtles do not fly, perform stunts or do any of the exciting moves fictional movie turtles do. Parents, trying to please their children, purchased live turtles which ended up languishing in tanks.”