Grape Island is rich with fruity goodness – not grapes, but raspberries, bayberries and elderberries, all growing wild amid the scrubby wooded trails. The wild fruit attracts abundant bird life. Park rangers lead an interesting ‘wild edibles’ tour highlighting the fruits of the earth. Grape Island is also the starting point for twice-daily sea-kayak outings led by park rangers. Unlike many of the Harbor Islands, Grape Island has no remains of forts or military prisons; but during the Revolutionary War, it was the site of a skirmish over hay, known as the Battle of Grape Island.