At Holden Beach in North Carolina, sea turtle volunteers are seeing one of their strongest nesting seasons yet, with this year's tally running well ahead of where it stood a year ago. That good news comes with a worry, though: unusually hot beach conditions could affect the hatchlings developing beneath the sand. What happened? According to NBC Palm Springs, so far this season, the turtle watch team in Holden Beach has recorded 69 nests, compare…