GO FISH IN MASSACHUSETTS

Boston Marathon runners aren’t the only ones who undergo an endurance test in spring: Millions of river herring migrate into Massachusetts’s coastal waters for their annual journey upstream. When they encounter obstacles like dams and steep elevation changes, man-made fish ladders help them up and over. Pick a sunny day and head out to watch one of nature’s more intriguing spectacles. The Nemasket River in Middleborough is the largest herring river run in the state. As many as 1 million fish migrate over the Wareham Street Dam and Fishway, making it a great place to view the herring run. Watch on Wareham Street off Route 105 in downtown Middleborough from late March to early May. Another great spot is Oliver Mills Park, site of an annual herring run festival on April 8 and 9.