Two ecologists wearing protective coveralls and respiratory masks collecting samples of lake water in polluted area with warning biohazard sign
Professional ecologist in protective coverall, respiratory mask and gloves collecting water sample into test tube from polluted gulf
Ecologist wearing protective coverall, rubber boots and respiratory mask crouching on polluted shore, collecting sample of soil and examining test tube
Female ecologist wearing protective coverall, respiratory mask, gloves and rubber boots collecting water sample into test tube while examining polluted gulf
Two ecologists in protective coverall suits and respiratory masks collecting samples of lake water in polluted area into test tube
Two ecologists wearing protective coveralls and respiratory masks discussing test tubes with samples of polluted water while working at gulf coast
Two female ecologists wearing protective coveralls and respiratory masks examining test tubes with samples of polluted water and talking while working at gulf coast
Close up selective focus shot of yellow warning biohazard sign on lakeshore in polluted area, group on ecologists working in background
Group of ecologists wearing protective coveralls and respiratory masks walking along gulf coast with sample case and having discussion while doing research in polluted area
Two ecologists in protective coveralls, gloves and respiratory masks collecting seaweeds from water polluted area into test tube
Slowmo shot of group of ecologists in chemical repellent suits examining river bank of polluted biohazard area taking water and soil samples and having discussion
Team of professional ecologists in protective coveralls, gloves, helmets and respiratory masks standing in polluted area, using laptop and talking