Related by context. Frequent words. (Click for all words.) 55 species 55 Sea otters 55 amphipods 55 tunicate 54 voracious predators 54 plesiosaurs 54 overharvested 53 Darwin finches 53 insectivores 53 aquatic invertebrates 53 arthropod 53 apex predator 53 pine martens 53 leatherback sea turtles 53 cone snails 53 biting midges 52 biota 52 staghorn coral 52 flatworm 52 seabird populations 52 frogs salamanders 52 quaggas 52 round goby 52 damselfish 52 fulmars 52 pteropods 52 amphibians reptiles 51 dinoflagellate 51 harlequin ducks 51 gobies 51 marine invertebrates 51 tunicates 51 horned dinosaurs 51 americanus 51 shearwater 51 amphipod 51 freshwater crocodiles 51 pocket gophers 51 freshwater habitats 51 baleen whale 51 giant squids 51 sea squirt 51 brachiopods 51 endemic species 51 crocodilian 51 zooplankton 50 flatworms 50 shortnose sturgeon 50 stickleback 50 marbled murrelets 50 crab larvae 50 protozoan 50 gastropods 50 eiders 50 mud snail 50 migratory habits 50 guillemots 50 moray eel 50 Indohyus 50 hellbender 50 reproduce asexually 50 gannet 50 larval stages 50 Daphnia 50 seagrass meadows 50 platypuses 49 toxic algal blooms 49 black capped chickadee 49 kittiwakes 49 Coral reef 49 submerged aquatic vegetation 49 pine marten 49 wintering habitat 49 penguin colonies 49 stoat 49 sea squirts 49 double crested cormorant 49 bluebills 49 sticklebacks 49 sea anemone 49 mollusc 49 Trumpeter swans 49 tubeworms 49 temperate forests 49 Yellowstone cutthroat 49 vertebrate animals 49 ichthyosaur 49 murrelet 49 golden plover 49 toothed whales 49 Scientists theorize 49 seals sea lions 49 deplete oxygen 49 Pribilofs 49 otolith 49 canids 49 diatom 49 daddy longlegs 48 distinct subspecies 48 zebra mussel 48 protozoan parasite