环境变化：安达曼海泻湖底快速蔓延的海底蓝藻水华

and previously existed at this sandy underwater lagoon floor, where a benthic cyanobacteria mat bloom now stretches as far as visibility allows. The scene offers open copy space in the blue water above, with the bacterial growth dominating the entire foreground. Filmed from scuba diver POV at approximately 15 metres depth where ambient light is dim. 4K, low angle, vertical medium lockdown shot. Ko Haa Archipelago, Andaman Sea, Krabi Province, Thailand.