The Monterey Bay Aquarium has another young great white shark on exhibit. It was found Aug. 18 off Marina del Rey. The aquarium says it hopes this one will remain on exhibit for several months before returning it to the sea . . . . Coronado holds a free art walk Sept 17-18 at the ferry landing and at Spreckels Park, part of San Diego’s Arts Month . . . . Be sure to top off that rental car. USA Today reports that some rental companies charge as much as $9.29 a gallon when a car is returned without a full tank . . . . “Insomniacs need to relearn how to sleep again,” is the premise behind “Sleep School” classes at LaSource, a spa resort in Grenada . . . . The Vancouver International Writers & Readers Festival, now in its 24th year, will be held Oct. 18-23, with readings, panels and on-stage interviews . . . . Breezes Bahamas has closed for repairs until Nov. 1 in the wake of Hurricane Irene . . . . The National Oceanic and Atmospheric Administration, which is receiving high marks for the accuracy of its predictions during Irene, says two P-3 hurricane hunter planes and a G-4 jet made repeated research flights into and around the storm to help determine its path . . . . "Solid Gold" dance legend Darcel Leonard leads lessons during a weeklong dance-and-fitness celebration at the Oaks at Ojai, a destination spa . . . . Travel fact of the day: A white shark has more than 3,000 serrated, razor-sharp teeth arranged in rows.