When: June 10. Where: Boston, MA. What: In 278 B.C., beloved Chinese poet Qu Yuan threw himself in a river. Unable to save him, townspeople, myth holds, threw rice into the water and splashed to keep fish from eating his body. In this annual Dragon Boat Festival, more than 600 participants race brilliantly painted dragon boats on the Charles River to commemorate the event. Tip: Be sure to capture the sloshing water and frenzied paddling of the race. Zoom in close to the action (Storrow Drive is a good vantage point level with the water), and experiment with longer shutter speeds to catch the motion. For info: www.bostondragonboat.org.