风螺介壳卡在安达曼海的礁石缝隙中

bid conch shell (Strombidae sp.), likely a spider conch, sits wedged between encrusting reef rocks in a sheltered crevice, its ridged outer surface heavily colonised by coralline algae and reef sediment. Strombid conchs are active grazers of reef algae, playing a measurable role in controlling algal overgrowth that would otherwise smother coral substrate. Coralline algae, encrusting sponge and fine sandy sediment surround the shell. 4K, vertical frame, medium shot, scuba diver POV. Andaman Sea, Krabi Province, Thailand.