Guri and Gura's Seaside Adventure

True Companions, Companion books, series additions and sequels continue to bloom this spring. Guri and Gura, the mouse heroes of a bestselling Japanese series introduced to U.S. readers last fall, find a message in a bottle in Guri and Gura's Seaside Adventure by Reiko Nakagawa and Yuriko Yamawaki. Water safety instructors take note: these two learn how to swim only after they have floated in swimming tubes (lifesavers) to Pearl Lighthouse Island, where they meet a Sea Giant (a human). (Apr.)