NEW YORK — While Jim Carrey is awaiting a script for New Line’s remake of “The Secret Life of Walter Mitty,” sources say he’s in preliminary talks with Warner Bros. to topline yet another remake, this time of the 1964 comedy “The Incredible Mr. Limpet.”

There’s no deal, but sources say Carrey’s high on the idea of playing the title character, originally done by Don Knotts, of a meek but patriotic guy who is turned down by the Navy because of his physical limitations. He falls into the water, turns into a fish, and becomes the Navy’s secret weapon.

The pic has an excellent chance of becoming reality, because Carrey likes the material and wouldn’t have to work the full 12-week schedule. Much of his workload would be voicing an animated fish, so it would be an easier sked than for a full-fledged Carrey vehicle.