Signal Ensemble Theatre’s production of Edward Albee’s 1975 Pulitzer winner, which features an interspecies double date on a beach, follows on the heels of City Lit’s delicate staging last fall, and Ronan Marra’s playful revival does equal justice to the play’s mysteries. The mature human couple, Nancy and Charlie, are torn between settling into retirement and setting out for new adventures. Leslie and Sarah, the reptilian couple (wearing Laura M. Dana’s wonderful lizard garb), put their plight in perspective by providing a lesson in emotional relativism. Mary O’Dowd and Don Bender capture the regrets and conditional happiness of the two-footed twosome, while Aaron Snook and Georgann Charuhas are delightfully inquisitive as the sea creatures. Through 2/18: Thu-Sat 8 PM, Sun 3 PM, Chopin Theatre, 1543 W. Division, 773-347-1350, $15.