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
Cropped low section shot of team of ecologists wearing protective coveralls and rubber boots walking together along coastline with biohazard sign in polluted area
Ecologist wearing protective coverall and respiratory mask collecting sample of soil on polluted gulf shore with warning biohazard sign
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 coverall suits and respiratory masks collecting samples of lake water in polluted area into test tube
Professional ecologist in protective coverall, respiratory mask and gloves collecting water sample into test tube from polluted gulf
Two ecologists wearing protective coveralls and respiratory masks collecting samples of lake water in polluted area with warning biohazard sign
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
Back-view shot of two ecologists in protective suits and rubber boots walking down muddy area of polluted town outskirts holding equipment for quality control
Team of professional ecologists in protective coveralls, gloves, helmets and respiratory masks standing in polluted area, using laptop and talking