crocodile resting beside wetland pond among wet grass and muddy vegetation, showing rugged scales, powerful body, alert eyes, natural camouflage, and quiet wildlife habitat scene - 生態學家 個影片檔及 b 捲影像00:14
crocodile swimming through dark green water, textured scales and rugged back above ripples, creating quiet wildlife scene with natural camouflage and aquatic movement in wild habitat - 生態學家 個影片檔及 b 捲影像00:15
whale shark swimming underwater in deep blue ocean among fish, showing spotted skin, broad body, gentle marine life movement, peaceful wildlife scene, and marine conservation concept - 生態學家 個影片檔及 b 捲影像00:13
wild grass meadow with delicate seed heads and solitary plant across natural field in warm summer light, soft texture, muted green tones, and gentle seasonal movement - 生態學家 個影片檔及 b 捲影像00:10
meadow grassland with small bird near wetland water and natural habitat, layered green vegetation, wildlife, warm sunlight, wild plants, tall grass seed heads, tranquil summer landscape and textured - 生態學家 個影片檔及 b 捲影像00:08
singapore landmarks in asia travel woman hiker exploring tropical garden with backpack, lush foliage, greenery and colorful plants during peaceful nature exploration and joyful traveler adventure - 生態學家 個影片檔及 b 捲影像00:12
singapore landmarks in asia travel tropical forest woman backpack green foliage nature smile explorer traveler tourist adventure through lush rainforest garden trail surrounded by vibrant plants - 生態學家 個影片檔及 b 捲影像00:14
singapore landmarks in asia travel tropical foliage plant rainforest mist with broadleaf green vegetation, jungle leaf greenery, lush botanical growth, tranquil humid wilderness landscape and natural - 生態學家 個影片檔及 b 捲影像00:11
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:22
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:16
a female scientist is examining samples of wastewater discharged from a factory into the sea. - 生態學家 個影片檔及 b 捲影像00:14
a female scientist is examining samples of wastewater discharged from a factory into the sea. - 生態學家 個影片檔及 b 捲影像00:07
a scientist is putting on rubber gloves in preparation to collect samples of water contaminated with toxic substances discharged from a factory into a public water source. - 生態學家 個影片檔及 b 捲影像00:15
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:11
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:13
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:14
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:19
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:16
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:19
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:25
diverse man and woman engineer sitting meeting at outdoor table inspecting wind turbine model with laptop and tablet, talking and looking at computer for alternative electricity energy project. - 生態學家 個影片檔及 b 捲影像00:11
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:21
a female scientist is recording data from an examination of wastewater samples discharged from a factory into the sea. - 生態學家 個影片檔及 b 捲影像00:18
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:13
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:26
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:28
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:35
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:13
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:42
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:26
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:14
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:15
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. - 生態學家 個影片檔及 b 捲影像00:19
scientists are collecting water samples contaminated with toxic substances released into public waterways from factories. conservationists examine water pollution affecting marine ecosystems. - 生態學家 個影片檔及 b 捲影像00:14
diverse man and woman engineer sitting meeting at outdoor table inspecting wind turbine model with laptop and tablet, talking and looking at computer for alternative electricity energy project. - 生態學家 個影片檔及 b 捲影像00:10
environmental scientists inspecting water quality of the water sample and contaminants - 生態學家 個影片檔及 b 捲影像00:18
environmental scientists inspecting water quality of the water sample and contaminants - 生態學家 個影片檔及 b 捲影像00:13
environmental scientists inspecting water quality of the water sample and contaminants - 生態學家 個影片檔及 b 捲影像00:17
environmental scientists inspecting water quality of the water sample and contaminants. - 生態學家 個影片檔及 b 捲影像00:10
environmental scientists inspecting water quality of the water sample and contaminants. - 生態學家 個影片檔及 b 捲影像00:10
environmental scientists inspecting water quality of the water sample and contaminants. - 生態學家 個影片檔及 b 捲影像00:15
environmental scientists inspecting water quality of the water sample and contaminants. - 生態學家 個影片檔及 b 捲影像00:15
environmental scientists inspecting water quality of the water sample and contaminants - 生態學家 個影片檔及 b 捲影像00:17
environmental scientists inspecting water quality of the water sample and contaminants - 生態學家 個影片檔及 b 捲影像00:13
environmental scientists inspecting water quality of the water sample and contaminants - 生態學家 個影片檔及 b 捲影像00:07
