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(Click for frequent words.) 67 seabed 62 seafloor habitats 61 lakebeds 61 intertidal 60 coastal waters 60 hydrate deposits 59 inter tidal 59 eroding shorelines 59 deepwater corals 58 reefs 58 intertidal zones 57 reef habitats 57 intertidal zone 57 polar oceans 57 freshwater aquifers 57 shorelines 57 Lophelia 57 vessel groundings 57 continental shelf 56 vulnerable marine ecosystems 56 Exclusive Economic Zones 56 waters 56 manganese nodules 56 fragile marine ecosystems 56 tidal waters 56 bacterial mats 56 inshore waters 56 seafloor sediments 56 Siberia Lake Baikal 56 abyssal plain 56 EEZs 56 coastland 55 Kermadec Arc 55 subglacial lake 55 pristine rainforest 55 saltmarshes 55 acquifers 55 archipelagos 55 scallop dredging 55 oceans 55 dwelling organisms 55 saline aquifers 54 volcanic archipelago 54 kaimoana 54 reef 54 Oculina coral 54 Seabed 54 ocean basins 54 foreshores 54 freshwater springs 54 Chuckchi 54 Arctic seabed 54 tropical coral reefs 54 bull kelp 54 icefields 54 Bottom trawling 54 inlands 54 mussel farms 54 seamounts 54 subtidal 53 Okinotori 53 Drakes Estero 53 sargassum 53 Basking shark 53 nearshore waters 53 shoreline 53 algal mats 53 kelp beds 53 coastal marshland 53 coastlines 53 cypress forest 53 freshwater aquifer 53 tideland 53 turtle nesting beaches 53 Beaked whales 53 upland habitats 53 coastal seabeds 53 migratory corridors 53 Tidal currents 53 pristine coastline 53 inland bays 53 coral formations 53 abyssal plains 53 spawning aggregations 53 mussel beds 53 seashores 53 planktons 53 corals sponges 52 pristine coral reef 52 isopods 52 northwestern Hawaiian Islands 52 navigable rivers 52 tidal pools 52 Lamu basin 52 icecaps 52 tidal salt marsh 52 polar icecap 52 Sable Gully 52 seacoasts 52 seafloors 52 Sperm whale 52 groundwaters 52 Hatton Rockall 52 towering icebergs 52 rocky coves 52 Wadden Sea 52 coastline 52 coral reefs 52 rockweed 52 mangrove islands 52 tidal estuaries 52 mud volcanoes 52 sedimentary deposits 52 tailing ponds 52 subaqueous 52 coral habitats 52 seagrass habitat 52 Larne Lough 52 wetland vegetation 52 nearshore reefs 52 freshwater habitats 52 Spratly archipelago 52 seawaters 52 mangrove ecosystems 52 seabed sediments 51 #sq km [003] 51 mosquito infested swamps 51 coastal headlands 51 coccolithophores 51 ecologically fragile 51 caribou calving 51 limestone outcrops 51 virgin rainforests 51 Okinotorishima 51 extinct volcanoes 51 cetaceans whales dolphins 51 seabird breeding 51 marine sediments 51 fringing reefs 51 ocean 51 aquatic fauna 51 rills 51 coastlands 51 Popponesset Bay 51 eel grass 51 Fishing trawlers 51 sea lochs 51 Seamounts 51 mangrove estuaries 51 polymetallic nodules 51 temperate rainforests 51 undersea volcanoes 51 Arctic permafrost 51 Artificial reefs 51 subseafloor 51 seagrass meadows 51 ultradeep waters 51 Tonle Sap lake 51 Artic Ocean 51 watertable 51 middens 51 continental shelf extends 51 seagrass beds 51 mudflat 51 waves gently lapping 51 embayments 51 saline aquifer 51 sandpipers plovers 51 oligotrophic 51 sandspit 51 sandbanks 51 Chuitna River 51 alluvial plains 51 Darwin Mounds 51 Seagrasses 51 peat soils 50 bird rookeries 50 benthos 50 Snorkelers 50 Skagerrak 50 Hunga Tonga 50 kelp forests 50 Continental Shelf 50 garigue 50 marine biota 50 remnant vegetation 50 freshwater lakes 50 pristine wildernesses 50 hydrological cycles 50 subsurface 50 contaminate aquifers 50 fishable waters 50 pristine coral reefs 50 Kimbe Bay 50 freshwater ecosystems 50 seagrasses 50 Lake Mainit 50 coral cays 50 shell midden 50 methane hydrate deposits 50 NWHI 50 reef ecosystems 50 Coral reef 50 sandy shoals 50 alluvial plain 50 ecologically sensitive areas 50 sub glacial lakes 50 rocky crevices 50 lakebed 50 Arctic ice floes 50 palaeo 50 hydrothermal vent 50 rocky outcroppings 50 rocky outcrops 50 ancient supercontinent 50 icecaps melt 50 sandy bottomed 50 sunken wrecks 50 zone EEZ 50 piers docks 50 delicate ecosystems 50 methane hydrates 50 Arctic Coastal Plain 50 coastal bays 50 Madaket Harbor 50 pristine rainforests 50 sandy shorelines 50 unsurveyed 50 calderas 50 qoliqoli 50 mud flats 50 sunken ships 50 McMurdo Dry Valleys 50 Lomonosov ridge 50 islands 50 sea 50 Whale Sanctuary 50 Hauraki Gulf islands 50 streambanks 50 tidal wetland 50 flood basalts 50 tectonic plate movements 50 Aniva Bay 50 coastal estuaries 50 hydrocarbon reservoirs 50 Spitsbergen archipelago 50 fringing reef 50 pristine forests 50 sandy ridges 50 Kalayaan Islands 50 shipworm 50 rivers estuaries 50 Spratly islands 50 toxic tailing ponds 50 Lake Iliamna 50 sandy coves 50 mudflats 50 recreational scuba divers 50 littoral waters 50 Basking sharks 50 limestone formations 50 tidal inlets 50 methane hydrate 49 megaflood 49 carbonate sediments 49 Bering Seas 49 dolphins porpoises 49 Sea otters 49 tidally influenced 49 ecoregions 49 Methane hydrates 49 thawing tundra 49 seamount 49 shallow reefs 49 whales seabirds 49 secluded bays 49 stony corals 49 shell middens 49 temperate rainforest 49 economic zones EEZs 49 Sand dunes 49 Sea squirts 49 coral reef habitat 49 Lake Vostok 49 Peat bogs 49 islets reefs 49 eelgrass beds 49 mangroves coral reefs 49 shallow bays 49 Fairydell Bon Accord 49 Ninglick 49 seas 49 stinging tentacles 49 EEZ 49 shallower reefs 49 bays estuaries 49 methane seeps 49 tidal wetlands 49 Nunavut Territory coal 49 sunless depths 49 Balarat Project 49 volcanic caldera 49 Seabed Authority 49 eelgrass habitat 49 karstic 49 clam beds 49 streambeds 49 Beached whales 49 Cendrawasih Bay 49 freshwater lakes rivers 49 volcanic cone 49 hyper saline 49 pebbly beaches 49 Rano Raraku 49 Arctic Archipelago 49 Maui dolphin 49 refugia 49 uninhabited islets 49 Caretta caretta 49 hyena dung 49 turbid waters 49 river deltas 49 thermal vents 49 biodiverse ecosystems 49 coral ecosystems 49 permafrost thaws 49 peat lands 49 riverbeds 49 eider ducks 49 Raukumara Basin 49 rocky islets 49 eelgrass meadows 49 Great Lakes bottomlands 49 bleached coral 49 subglacial lakes 49 Chukchi Cap 49 greenland 49 abyssal depths 49 macrofauna 49 Sperm whales 49 rocky reefs 49 Chuuk Lagoon 49 Amundsen Sea 49 Arapaima gigas 49 pelagics 49 geological formations 49 New Zealand mudsnail 49 foreshore 49 volcanic craters 49 Laysan Island 49 re vegetating 49 Alliston Aquifer 49 headlands 49 Akaroa Harbour 49 saltwater estuary 49 Arctic Ocean 49 Antarctic krill 49 nontidal wetlands 49 Mola mola 49 blowholes 49 Sermilik Fjord 49 Tubbataha Reefs 49 biggest Adelie penguin 49 sedimentary layers 49 mangrove vegetation 49 sponges corals 49 terraformed 49 volcanic cones 49 prairie potholes 49 bedrock outcrops 49 Navajo Sandstone 49 evaporite deposits 49 sea turtle species 49 calving glaciers 49 pebble beaches 49 rocky headlands 49 #sq km [002] 49 coral reef 49 shadowed craters 49 grassbeds 49 undeveloped shoreline 49 lacustrine 49 alluvial diamonds 49 freshwaters 48 trawl fisheries 48 giant squid Architeuthis 48 freshwater crocs 48 rockpools 48 BP ruptured Macondo 48 marine sanctuaries 48 Great Barrier reef 48 sea squirts 48 Aleutian Basin 48 sandy spit 48 Humpback whale 48 penguin rookery 48 underwater volcanoes 48 blue crab traps 48 Kotzebue Sound 48 microscopic creatures 48 volcanic lava 48 eiders 48 seals walrus 48 dwelling invertebrates 48 coral colonies 48 penguin colonies 48 Bottom trawlers 48 Langebaan Lagoon 48 abyssal 48 Horseshoe Shoals 48 territorial waters 48 mud snails 48 Horseshoe crabs 48 Didemnum 48 Polpis Harbor 48 polar explorer Roald Amundsen 48 Okhotsk Sea 48 gastropods 48 poisonous tentacles 48 Golfo Dulce 48 volcanic vents 48 Oceanographers 48 elkhorn coral 48 Lophelia coral 48 thinning ozone layer 48 melting icebergs 48 Tropical rainforests 48 Teshekpuk 48 southerly latitudes 48 Ariake Sea 48 brackish marshes 48 mangrove fringed 48 marine organisms 48 hypoxic zone 48 freshwater mussel 48 impermeable shale 48 estuarine habitat 48 equatorial waters 48 placer workings 48 walrus polar bears 48 coral fringed 48 piers jetties 48 Nomura jellyfish 48 saltpans 48 Gas hydrates 48 iron sulphate 48 drifting icebergs 48 whenua 48 blanket bog 48 auks 48 erosional 48 waterways 48 Tuamotu 48 phytoplankton bloom 48 coral 48 ocean sunfish 48 gorgonians 48 migratory bird habitats 48 North Pacific Gyre 48 Tanon Strait 48 barnacle goose 48 Mariana Arc 48 longline fisheries 48 acid sulphate soils 48 threatened woodland caribou 48 fiords 48 Hammerhead sharks 48 Dirk Hartog Island 48 Lamlash Bay 48 petroliferous 48 Easton Bavents 48 Tañon Strait 48 freshwater wetlands 48 Aquifers 48 Azolla 48 toxins leaching 48 Chagos islands 48 Geologically speaking 48 Hardanger Fjord 48 receding glaciers 48 denning habitat 48 Azure Window 48 unspoiled wilderness 48 reef fishes 48 Whale carcass 48 Iceberg Alley 48 kelps 48 swamps marshes 48 underwater volcanos 48 biodiversity hotspot 48 ostracods 48 calcifying organisms 48 marine mollusks 48 Cayman Trough 48 lakeshores 48 scenic bluffs 48 headwater streams 48 subsurface minerals 48 Narran Lakes 48 wetland soils 48 freshwater streams 48 coral reef biodiversity 48 sea hydrothermal vents 48 rubbly 48 wetlands floodplains 48 bryozoans 48 eel fishery 48 tidepools 48 coral skeletons 48 branching corals 48 salmon spawning grounds 48 derelict crab pots 48 trepang 48 plankton blooms 48 Louisiana coastal marshes 48 Davidson Seamount 48 Water hyacinth 48 coastal temperate rainforest 48 aquatic flora 48 tidal estuary 48 Nassau grouper 48 forams 48 midwater trawling 48 glacial meltwater 48 Visayan Sea 48 riparian zones 48 ocean ecosystems 48 gyres 48 clathrates 48 saltwater marsh 48 flatback turtles 48 bony fishes 48 La Parguera 48 coralline algae 48 Kerguelen Plateau 48 Norway Svalbard 48 riparians 48 intertidal habitat 47 rotting seaweed 47 lava tubes 47 endangered leatherback turtles 47 Peary caribou 47 coral atoll 47 stinging jellyfish 47 algal species 47 trawl fishing 47 aquatic grasses 47 Seafloor 47 unreclaimed 47 nudibranch 47 Cape Poge 47 marine habitats 47 tiny single celled 47 undersea 47 Arafura Sea 47 subsurface mineral 47 wolffish 47 porous sandstone 47 marshy wetlands 47 estuarine habitats 47 maunga 47 emergent vegetation 47 Antarctic glacier 47 sandy bottoms 47 dune lakes 47 lightless depths 47 geoducks 47 fiord 47 karst limestone 47 lakesides 47 microscopic phytoplankton 47 invertebrate populations 47 Manukau Harbour 47 Steep slopes 47 karst topography 47 fisheries bycatch 47 bluefin tuna fishery 47 Kattegat 47 Sperrgebiet 47 barrens 47 icesheets 47 Seagull Intrusion 47 Whales dolphins 47 tidewater glaciers 47 spartina grass 47 Pseudo nitzschia 47 rivers lakes 47 limestone escarpment 47 Chuckchi Sea 47 Minke Whale 47 Lake Rotomahana 47 hidden coves 47 Tore Halvorsen FMC 47 Algae bloom 47 Pujada Bay 47 shoreward 47 Hawaiian archipelago 47 pigeon guillemots 47 Napeague Harbor 47 Gangetic delta 47 aquifers 47 earths crust 47 coral Enzler 47 Loggerhead turtles 47 coastal marshlands 47 hydrocarbon accumulations 47 fishermens 47 Ice floes 47 diamondiferous kimberlite pipes 47 towing icebergs 47 Hunga Ha'apai 47 beech forests 47 mangrove habitats 47 salps 47 marram grass 47 damselfish 47 rusticles 47 Robson Bight 47 rookeries 47 waterweed 47 Creamsicle orange 47 Little Assawoman Bay 47 Tatar Strait 47 coral encrusted 47 Ontario Lacus 47 intermittent streams 47 chemosynthetic 47 sewage outfalls 47 wetland ecosystem 47 prawn trawling 47 spawning gravels 47 whale beached 47 migrating whales 47 ultradeep 47 Hematite Slope 47 sunken vessels 47 Ogasawara Islands 47 seaward boundary 47 Paracel archipelagos 47 Arctic icecap 47 scorpionfish 47 corals 47 marine ecosystem 47 estuaries 47 dense rainforests 47 starfish crabs 47 Nihoa Island 47 stony coral 47 Chagos Islands 47 Tubbataha 47 brackish marsh 47 subantarctic 47 hotsprings 47 coastal bluffs 47 sedge grass 47 volcanic crater 47 freshwater eels 47 pristine beachfront 47 mangrove roots 47 gasfields 47 benthic organisms 47 hypersaline 47 intracoastal waterways 47 Coromandel Great Barrier 47 Whangarei Harbour 47 Nansha Islands 47 shallow weedy 47 auklets 47 cockle beds 47 gopher tortoise burrows 47 whale sanctuary 47 recolonised 47 tidal mudflats 47 Thorthormi 47 Serengeti ecosystem 47 coral islets 47 Gorgon Browse 47 #sq km [001] 47 barrier reef 47 estuaries bays 47 subsoil 47 Chukchi Seas 47 creeks rivers 47 Heretaunga Plains 47 waahi tapu 47 Athabasca tar sands 47 Kittlitz murrelet 47 demersal fish 47 muddy bottoms 47 Leatherback turtles 47 landmasses 47 Disko Bay 47 permafrost melts 47 bays inlets 47 beaver lodges 47 dredged sediments 47 verdant forests 47 goby fish 47 crinoids 47 barren expanse 47 Delaware Inland Bays 47 seafloor sediment 47 limpets 47 depleted aquifers 47 archipelagic waters 47 enormous sperm whales 47 bathymetry 47 Plate tectonics 47 barnacle encrusted 47 Brackish water 47 escarpments 47 prawn fishery 47 clogging waterways 47 Titicaca 47 polar bears walruses 47 Moapa dace 47 worms crustaceans 47 mola mola 47 pteropods 47 terminal moraine 47 toxic algal blooms 47 uncultivated land 47 Lower Tertiary trend 47 Catface Mountain 47 abalones 47 inshore reefs 47 Solitary Islands 47 degraded ecosystems 47 glacier calving 47 southeastern Bering Sea 47 upland forests 47 coastal dune 47 paramo 47 seabird colonies 47 shallow waters 47 Ningaloo reef 47 marine reptiles 47 bryophytes 47 purse seining 47 island paradises 47 oyster fishery 47 jagged coastline 47 mauri 47 gillnet fisheries 47 humpback minke 47 nesting beaches 47 maui dolphins 47 estuarine crocodile 47 Ngauruhoe 47 seabird nesting 46 Late Paleozoic 46 oyster reefs 46 adjacent islets 46 alluvial soils 46 Minke whale 46 Svalbard archipelago 46 Kii Peninsula 46 tidal shoreline 46 Appy Sluijs 46 biodiverse regions 46 tortoise habitat 46 Economic Exclusion Zone 46 Ningaloo 46 Galilean satellites 46 ecologically sensitive wetlands 46 Bothnia 46 coralline 46 Olive Ridley sea turtles 46 terrestrial ecosystems 46 Barents sea 46 sawgrass prairies 46 oceanographers 46 turbidites 46 marshy swamp 46 Blainville beaked whales 46 Great Artesian Basin 46 Acidification 46 Historic Shipwrecks Act 46 Loligo 46 submarine volcanoes 46 hardwood swamps 46 Crozet Islands 46 penguin rookeries 46 vaquitas 46 DiTorrice 46 basalt volcanic 46 perma frost 46 halogenated gases 46 Squamish Estuary 46 aquatic habitats 46 Xisha 46 Chagos Archipelago 46 Exmouth Plateau 46 Porong River 46 Lake Cootharaba 46 sunken hulk 46 Shiretoko Peninsula 46 herbivorous fish 46 Kiteboarders 46 ironsand 46 geological prospectivity 46 HABs 46 Whillans Ice Stream 46 Lara Tessaro 46 Portsea Pier 46 Sperm Whale 46 Pescadero Marsh 46 lakes 46 tropical glaciers 46 single celled creatures 46 limestone karsts 46 shifting sandbars 46 fishing fleets 46 seabird species 46 bioluminescent bay 46 oceanic currents 46 snail shells 46 conodonts 46 Flowline pipe laid 46 baiji dolphin 46 skuas 46 Gizzard shad 46 aboriginal subsistence 46 Economic Zone EEZ 46 wahi tapu 46 estuarine crocodiles 46 Sargasso Sea thick 46 Upper Floridan aquifer 46 marine biodiversity 46 Lampreys 46 mangrove wetlands 46 Studland Bay 46 coastal upwelling 46 glacial silt 46 Quaternary Period 46 swans glide 46 floating aimlessly 46 limestone ledges 46 rocky islet 46 icecap 46 Sediment cores 46 fumaroles 46 Chinese mitten crab 46 ecologies 46 Kimmeridge Bay 46 spawning beds 46 ancient Polynesians 46 Antarctic Territory 46 pebbled beaches 46 renourish beaches 46 waterbodies 46 sedimentary layer 46 Lake Nyasa 46 Jewfish 46 sand dredged 46 Mersey Estuary 46 endangered seabirds 46 sewage outfall 46 Swire Navigation 46 endangered bowhead whales 46 saltwater marshes 46 prawn ponds 46 Adavale Basin 46 Hondoq ir Rummien 46 disused quarries 46 montane forests 46 landmass 46 Ramsar wetland 46 saline formations 46 Sulu Sea 46 rivermouth 46 migratory bird habitat 46 damming rivers 46 penguins seals 46 eucalypt forests 46 Disko Island 46 longline fishery 46 icescape 46 Saanich Inlet 46 Menemsha Pond 46 Lake Balkhash 46 volcanic islands 46 moorlands 46 cork bobbing 46 candlefish 46 celled organisms 46 crabs snails 46 pelagic fishes 46 Teztan Biny 46 roiling shark infested 46 Baleen whales 46 paleochannel 46 boreal regions 46 neutrally buoyant 46 saltmarsh 46 leatherback sea turtles 46 slimy goo 46 tideflats 46 tidal marshes 46 freshwater lagoons 46 bioregion 46 calcium carbonate skeletons 46 tidal rivers 46 Waquoit Bay 46 reed beds 46 nesting seabirds 46 dredged sand 46 acidic oceans 46 photic zone 46 opihi 46 esker 46 subsalt layer 46 Warmer oceans 46 Waning Ida downpours 46 threadfin 46 purse seine fishing 46 peat bogs 46 wooden crate dumped 46 Gwaii Haanas 46 forested watersheds 46 marine ecosystems 46 remnant bushland 46 Manta rays 46 artisanal fishers 46 seals sea otters 46 Boreal forests 46 oysters shrimp crabs 46 Martian crust 46 shipwrecks 46 Weddell Sea 46 Saharan Desert 46 Palos Verdes Shelf 46 Thawing permafrost 46 gas hydrates 46 barnacle geese 46 glaciers icebergs 46 geotextile bags 46 Treasure hunters 46 freshwater marshes 46 dolphin carcasses 46 Pacific Subtropical Gyre 46 sewage outfall pipe 46 Nansha islands 46 shallow lagoon 46 gypsum crystals 46 Menai Strait 46 microbialites 46 Orange roughy 46 Dongsha Islands 46 coastal ecosystems 46 Pelagia noctiluca 46 inshore fisheries 46 estuarial 46 Nares Strait 46 substrata 46 sulfide deposits 46 carboniferous 46 fertile topsoil 46 Skeleton Coast 46 Tubli Bay 46 cratons 46 lakes rivers 46 kai moana 46 Leatherback sea turtles 46 terns nesting 46 Ningaloo Reef 46 blobfish 46 Leduc Formation 46 snailfish 46 prevailing westerly winds 46 plankton feeders 46 Osisko Hammond 46 Grass carp 46 archeologically 46 tidal inlet 46 puffin colony 46 shortfin 46 seawater 46 Kachchatheevu 46 cetaceans whales 46 Navy copter crashes 46 Liaodong Bay 46 wetland ecosystems 46 oily bilge water 46 Sandbars 46 Atlantis Massif 46 Galapagos Archipelago 46 foraminifera 46 Kasatochi 46 placer deposits 46 nodding donkeys 46 basalt lava 46 Arctic Barents Sea 46 scallop fisheries 46 crustaceans molluscs 46 Muskeget 46 sealife 46 antarctic 46 scallop fishermen