Manatee BluesPaperback, 1 March 2008

Dr. Mac has brought Brenna, Maggie, and Zoe to Florida to visit her friend Gretchen, a marine biologist who runs a manatee rescue center that's in desperate need of money. Brenna's immediately drawn to the endangered, gentle giants, and wants to do whatever she can to help them--and the center. But is she causing trouble where she wants to help?