Female ecologist wearing protective coverall, respiratory mask, gloves and rubber boots collecting water sample into test tube while examining polluted gulf
Ecologist wearing protective coverall and respiratory mask collecting sample of soil on polluted gulf shore with warning biohazard sign
Professional ecologist in protective coverall, respiratory mask and gloves collecting water sample into test tube from polluted gulf
Two ecologists in protective coverall suits and respiratory masks collecting samples of lake water in polluted area into test tube
Two ecologists in protective coveralls, gloves and respiratory masks collecting seaweeds from water polluted area into test tube
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
Cropped shot of group of ecologists wearing protective coveralls and rubber boots carrying sample case walking together along shore in polluted area
Two female ecologists wearing protective coveralls and respiratory masks examining test tubes with samples of polluted water and talking while working at gulf coast
animation - of unrecognizable ecologist in protective coverall and gloves taking sample of water in polluted river or lake with test tube
Slowmo close up of unrecognizable ecologist in protective coverall and gloves taking sample of water in polluted river or lake with test tube
Slowmo shot of female scientists in protective coveralls exploring polluted seashore area and taking soil sample putting it into test tube