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This is a ribbon #worm (Nemertea). 🪱 It lacks specialized gills and instead respires through the surface of its skin. | Science Channel

The ribbon worm belongs to the phylum Nemertea and is known for its long, ribbon like body and a hidden weapon most animals never see. The white branching structure visible here is its proboscis, a feeding tube normally stored inside the body and rapidly fired outward to capture prey. Seeing it fully extended is rare and offers a glimpse into how unusual these creatures really are. Ribbon worms live in marine, freshwater, and even damp terrestrial environments, often tucked beneath rocks, sand,