ordinary ocean in animal organism poison / land / natural throughout the vegetable
aquatic_life_zone is not natural_thing. aquatic_life_zone is natural_thing. ecosystem is natural_thing. ocean_zone is natural_inanimate_thing. ocean is home_to_multiple_organic_creatures. waterfront_property is not unnatural_thing. international_waters is not unnatural_thing. desert_ecosystem is natural_thing. international_waters is unnatural_thing. waterfront_property is unnatural_thing.