SAVANNAH — Rare loggerhead sea turtles spent a busy summer laying eggs on beaches in Georgia and the Carolinas, where nest counts this year smashed previous state records by double-digit margins. "We thought we'd have a lot of nests, but we didn't expect this big of a jump," said Mark Dodd, the state biologist who heads the sea turtle recovery program in Georgia, where volunteers since May have counted more than 3,250 nests dug in the sand by giant loggerhead turtles. That's a whopping 40-percent increase from Georgia's previous record of 2,325 nests tallied a year ago.