Red Lobster, America's largest seafood restaurant chain, is looking to redefine itself both at home and overseas.

The casual dining segment, in which Red Lobster operates, is unsettled, wedged now between lower-cost, fast-casual dining outlets on one side and high-end, fine-dining restaurants on the other. Unable to compete directly with either of these types of eating establishments, Red Lobster and other casual-dining chains have seen business slip away.

Last week, IntraFish reported on the unexpected departure of two members of Red Lobster's senior