The exuberant musician-naturalist Rothenberg (Why Birds Sing) jams with cetaceans in this inventive, joyful chronicle of the rich underwater universe of whale sound. From the Caribbean to the Arctic, he explores the sounds and lives of orca, humpback, beluga, minke and sperm whale. The package includes a 60-minute audio CD of Rothenberg and friends (guitar, percussion, violin) accompanied by whale music.  (NAT144, $18.00)