Marine-animal expert Jean-Michel Cou­steau — who worked on the successful release of Keiko, the star of “Free Willy,” into a seaside pen (before he died in the wild) — said SeaWorld Entertainment can move its orcas to seaside sanctuaries without costing it money.

Cousteau told The Post’s Josh Kosman he is now working with the National Aquarium in Baltimore to move captive dolphins to a clean sea pen, possibly near Hawaii.

“I want to help SeaWorld,” Cousteau said. “If they continue the way they are [keeping Orcas in tanks despite the harsh criticism], they will go out of business.”