Run by a fifth-generation Tweed family for more than thirty years, these eco cruises wind up the Tweed River from Tweed Heads through mangrove creeks and rainforest reaches toward the river mouth. Sea eagles, ospreys and other birdlife are the draw, with dolphins often along the way, plus hands-on fishing and crabbing trips. Private charters and small-group sailings depart the marina on the New South Wales border.