Winter the Dolphin may be back on the big screen with Alcon Entertainment moving toward producing a sequel to its 2011 family drama “Dolphin Tale.”

Charles Martin Smith, who directed “Dolphin Tale,” is on board to helm the sequel from his own script, according to Alcon co-topper Andrew Kosove. He told Variety that the project has not yet been greenlit because deals for the cast and for financing haven’t concluded.

“Dolphin Tale” generated a solid $72 million at the U.S. box office through Warner Bros. and another $23 million overseas. The 3-D film was produced by Alcon toppers Kosove and Broderick Johnson, with Alcon marketing prexy Richard Ingber, who brought the project to the company.

That script by Karen Janszen and Noam Dromi, with revisions by Smith and Jordan Roberts, was based on true events about Winter, a dolphin who lost her tail in a crab trap and an 11-year old boy who befriended her at the Clearwater Marine Aquarium. He rallied friends and family to save Winter and convinced a doctor to create a prosthetic attachment to restore the dolphin’s ability to swim. Winter, who has resided at the Clearwater facility since 2005, played herself in the movie.

Cast included Harry Connick Jr., Nathan Gamble, Ashley Judd, Kris Kristofferson and Morgan Freeman.

The moviehole.net site first reported the development of the sequel.