If you have been waiting for the perfect time to see manatees, this is it. A cold front is sweeping across Florida this weekend, dropping overnight lows into the 40s and 50s. While that might make you want to stay in bed, it is the "Bat Signal" for Florida manatees. When local water temperatures drop below 68°F, manatees stop roaming and rush to the warm-water refuges. With the chill hitting this Saturday and Sunday, we expect record-breaking numbers  at the major viewing spo