28 May '16, 2am

@keeweeeee Worm ingests sand, eats edible particles, poops out the remaining sand.

@keeweeeee Worm ingests sand, eats edible particles, poops out the remaining sand.

Evidence of this curious animal is commonly seen on many of our shores. On sand bars, in sandy areas especially near seagrasses. The animal itself is almost never seen above ground. All that most people see is its coiled, grey cast (although many may use a less polite word). Sometimes if you are lucky, you might spot a bit of its backside poking out of the ground as it creates its cast. Acorn worms are delicate and almost certain to disintegrate if they are dug up. So please don't try to dig them up. What are acorn worms? Acorn worms are unsegmented worms belonging to Phylum Hemichordata. There are about 70 species of acorn worms. They are quite different from the segmented worms that we are more familiar with such as earthworms and bristleworms . These belong to Phylum Annelida. Features: 9-45cm long, some reaching over 2m long! They are usually slimy brown or pink worms....

Full article: http://www.wildsingapore.com/wildfacts/worm/enteropneusta...

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