Santa is already making an appearance at the Georgia Aquarium. He's scuba diving and greeting fans of all ages during this year's Festival of the SEAson. That's just one of the things you can see during a holiday visit at the aquarium. The Weeki Wachee Mermaids are back, putting on their underwater show with a chance to meet and greet with them. This year guests will also see a light show called Fantasea in Lights in the atrium of the aquarium. For more information on the events, click here. Some of the activities are included in admission, but have a limited number of spots.