Region: Tasmania Location: East Coast Description Comments Latitude S Longitude E Datum Binalong Patch Reef. 41.09.228 148.38.497 Merricks Reef St Helens Point. Reef species. 41.16.754 148.22.943 Water depth 6 - 60m. Middle Ground St Helens. Deep steep dropoff. 41.18.587 148.21.886 Water depth 11 - 300m. Reef species, crayfish. Pulfers Reef St Helens Point. Reef species, 41.26.146 148.21.744 crayfish. Water depth 9 - 50m.