Team Logo. The Savannah Sand Gnats were a team in the South Atlantic League. They were the Low-A affiliate of the New York Mets. They moved to South Carolina and became the Columbia Fireflies. Retrieved from "https://prosportsteams.fandom.com/wiki/Savannah_Sand_Gnats?oldid=14558" Categories: Former SAL Teams Teams in Georgia Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.