The Madison Area Reef Society hosts a yearly frag swap which gives hobbyists and salt water aquarium enthusiasts the opportunity to trade, purchase, and learn about corals. The frag swap itself is a not for profit event. MARS members and the general public are welcome to buy/sell and trade corals, dry goods and marine fish. Vendors from all over the country will be there with a wide variety of corals to choose from. Everyone who attends the MARS Frag Swap will be included in our door prize giveaways. (one free ticket per adult will be handed out upon entering) approximately the first 100 entries will receive a grab bag!! (one grab bag per household) While supplies last!!