Related by context. Frequent words. (Click for all words.) 55 seals sea lions 55 freshwater habitats 54 inter tidal 53 marine 51 intertidal 50 aquatic invertebrates 50 sargassum 50 amphipods 49 wetland ecosystems 49 marine invertebrates 49 coral formations 49 aquatic habitats 49 Sea otters 49 freshwater ecosystems 49 intertidal zone 49 planktonic 48 tunicates 48 tidepools 48 rocky reefs 48 kelp forests 48 deplete oxygen 48 microscopic plankton 48 estuarine 48 estuaries 47 larval stages 47 aquatic ecology 47 inland bays 47 tidal marshes 47 marine biology 47 freshwater marsh 47 aquatic ecosystem 47 dolphins whales 47 freshwater ponds 46 terrestrial ecosystems 46 macroinvertebrates 46 ecosystems 46 nearshore waters 46 killifish 46 kelp beds 46 microbial ecology 46 Phytoplankton 46 Wadden Sea 46 mudflat 46 seagrass beds 45 seagrasses 45 oceanography 45 seaweeds 45 invertebrate species 45 predator prey relationships 45 Killer whales 45 overharvested 45 marine ecosystems 45 voracious predators 45 bioregion 45 nutrient rich 45 eelgrass beds 45 habitats 45 damselfish 45 riparian zones 45 macroalgae 45 marine habitats 45 aquatic ecosystems 45 coral reef ecosystem 45 toothed whales 44 marine ecosystem 44 aquaria 44 stinging jellyfish 44 marine ecology 44 nesting seabirds 44 endemism 44 biodegraded 44 tidal pools 44 Polar Regions 44 coral reefs 44 mud minnows 44 temperate rainforest 44 inshore waters 44 baleen whale 44 coastal ecosystems 44 wetland habitats 44 seabeds 43 tidal waters 43 Whale sharks 43 ecology 43 lowland forest 43 phytoplankton blooms 43 apex predator 43 Domoic acid 43 foraminifera 43 Sperm whales 43 finfish 43 tidal marsh 43 reedbeds 43 coral reef ecosystems 43 coastland 43 salt marshes 43 shallow reefs 43 river deltas 43 flora fauna 43 geomorphology 43 ecologies