Two ecologists wearing protective coveralls and respiratory masks collecting samples of lake water in polluted area with warning biohazard sign
Ecologist wearing protective coverall and respiratory mask collecting sample of soil on polluted gulf shore with warning biohazard sign
Warning sign biohazard caution at industrial waste water area
Cropped low section shot of team of ecologists wearing protective coveralls and rubber boots walking together along coastline with biohazard sign in polluted area
Closeup of chemical warning sign ecologist sampling water from the river in background
Two ecologists in protective coverall suits and respiratory masks collecting samples of lake water in polluted area into test tube
Team of professional ecologists in protective coveralls, gloves, helmets and respiratory masks standing in polluted area, using laptop and talking
Cropped shot of group of ecologists wearing protective coveralls and rubber boots carrying sample case walking together along shore in polluted area
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
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
Tilting-up footage of couple of female ecologists in special protective suits and respiratory masks checking current ecological situation in most polluted area walking through mud
Professional ecologist in protective coverall, respiratory mask and gloves collecting water sample into test tube from polluted gulf