Wildly colorful sea creatures invade SF Bay this month for the 14th International Dragon Boat Festival. 110 teams will be paddling furiously in Clipper Cove off Treasure Island in this centuries old sport. It i is the largest race of its kind in the US and takes place on September 25 and 26. Both parking and admission are free. The event is as much a festival as a race, with a rich schedule of martial arts acrobats, Taiki drumming, food and shopping.