closeup of researcher hand scoops river water full of green algae and lets it flow down. analysis of ecological problems. environment, nature, save earth
aerial top down of sandy river bank and water heavily polluted with green algae. environmental problems, ecology and nature
Aerial view of dolphins swimming in the open water along the coast, Hout Bay, Cape Town, South Africa.
Underwater of a Mossy Sea With Sea-Urchin, Echinus and Urchin in Natural Ecosystem
closeup male hand holding and shaking container with green algae inside in slow motion with blurred river on background. scientific research of ecological problems. environment, nature, save earth