Related by context. Frequent words. (Click for all words.) 43 sonar 39 marine mammals 36 NOAA Fisheries 35 marine biologists 34 whales dolphins 34 marine mammal 34 sea lions 34 orcas 32 dolphins 32 endangered whales 32 whales 30 trawlers 30 porpoises 30 Atmospheric Administration 29 shallow waters 29 turnabout 29 submarines 29 NOAA 29 anti submarine warfare 28 oceanographers 28 humpback whales 28 Coast Guard 28 warships 28 infrared cameras 28 coastal waters 27 marine 27 FLIR 27 gill nets 27 humpbacks 27 radio transmissions 27 warship 27 cetaceans 26 aerial surveillance 26 whale 26 echolocation 26 scuba divers 26 sperm whales 25 recalcitrance 25 navy ships 25 USCG 25 scan sonar 25 spy satellites 25 night vision goggles 25 deeply troubling 25 rebuke 25 infrared imaging 25 humpback 25 juxtaposition 24 cadaver dogs 24 LRAD 24 Sonar 24 sperm whale 24 tin ear 24 minke whale 24 submarine 24 Oceanographic 23 escalation 23 radio transmitters 23 submersible 23 ROVs 23 oceanographic 23 divers 23 remotely operated 23 navigational aids 23 mischaracterization 22 littoral 22 propellers 22 navigational 22 thermal imaging 22 brinksmanship 22 swiftness 22 ocean 22 bottom trawling 22 hydrographic 22 underwater 22 unusually 21 infrared sensors 21 disconnect 21 dissolved oxygen 21 humpback whale 21 robot submarines 21 shoreline 21 navigation aids 21 detente 21 orbiting satellites 21 underwater robots 21 repudiation 21 Doppler radar 21 rebuff 21 undersea 21 infrared camera 21 hypocrisy 21 standoffish 21 crab pots 21 HMAS Sydney 21 sunken vessel 21 emergency beacons 20 antipathy toward 20 shoal 20 motorboats 20 maneuvering