死亡的角珊瑚骨骼被丝状红藻覆盖的特写

ilamentous red algae (Rhodophyta) engulfing the exposed skeleton of a collapsed gorgonian coral colony on an Andaman Sea reef. Thread-like filaments form entangling mats that smother surviving tissue, cutting off light and oxygen to the substrate. Overgrowth at this density is a documented consequence of nutrient pollution, declining water quality and reduced populations of herbivorous fish that would otherwise graze and limit algal spread. Extreme close-up shot from scuba diver point of view. 4K, static. Ko Haa Islands, Andaman Sea, Krabi Province, Thailand.

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作者署名：Placebo365/Getty Images/Placebo365/华夏视觉