What are the world’s longest worms?



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    The longest worm known, Lineus longissimus, which belongs to the phylum Nemertea. It is found under boulders at low tide along the North Sea and has been reported to exceed 150 feet in length and commonly exceeds 15 feet. In contrast, the smallest nemerteans are only 1 mm long and live in the pore-water on coarse sand beaches. Exact length of nemerteans can’t be measured because nemerteans are capable of stretching from 2 to more than 10 times their most contracted length. Nemerteans are common in many intertidal habitats; most are predators and feed on other worms and crustaceans.

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