Cynthia Stringfield had barely slept by the time she reached the Miami Seaquarium parking lot early Tuesday morning. She had been awake since 4 a.m. and was restless the night before. The day she’d anticipated for weeks was finally here: It was manatee moving day, and Stringfield was going along for the five-hour ride to Tampa. This was not just any manatee. This was Romeo, a 2,100-pound hunk ...