Related by context. Frequent words. (Click for all words.) 57 tidal 57 tidal turbine 56 Fundy 56 tidal turbines 53 Severn estuary 50 tidal currents 50 Severn Estuary 50 Tidal 50 Cobscook Bay 49 hydro dams 48 currents 48 tides 48 sand dredged 48 tidal waters 48 freshwater marshes 48 tidal marsh 48 tidal marshes 47 estuary 47 shoreline 46 hydrokinetic 46 Petitcodiac River 46 hydroelectric turbines 46 Passamaquoddy Bay 46 waterpower 46 Sakonnet River 46 SeaGen 45 seawater 45 plankton blooms 45 Muskrat Falls 45 hydro electric 45 Northumberland Strait 45 hydro 45 seawaters 45 tidal wetlands 44 offshore windfarm 44 Bay 44 rugged coastline 44 Skeena River 44 seabeds 44 coastland 44 placid waters 44 Hecate Strait 44 freshwater ecosystems 44 geoexchange 44 Marine Current Turbines 44 upwellings 44 freshwater 44 desalinization plant 44 shorelines 44 eelgrass beds 44 ocean currents 43 undertows 43 hydro electric dams 43 azure waters 43 westernmost tip 43 Strangford Lough 43 Pentland Firth 43 desalinate water 43 fiord 43 Hydro Tasmania 43 oyster reef 43 groundwater aquifers 43 cordgrass 43 shoreline erosion 43 phytoplankton blooms 43 coastal bluffs 42 salt marshes 42 Aquamarine Power 42 Otonabee River 42 Matagorda Bay 42 Wind turbines 42 ocean 42 Hydro 42 decomposing garbage 42 ocean outfall 42 Verdant Power 42 Belfast Lough 41 wooden pilings 41 seawater desalination 41 microscopic algae 41 desalinization 41 saltmarsh 41 Tropical Storm Earl 41 intertidal 41 freshwaters 41 Easterly winds 41 Horseshoe Shoal 41 Pelamis 41 Voith Hydro 41 forested wetlands 41 migrating whales 41 coastlines 41 Salt Pond 41 geo thermal 41 Bight 41 waterspouts 41 PowerBuoy 41 nanogenerators 41 Northerly winds 41 inter tidal 41 mud flats