Guinness World Records - Officially Amazing

Longest animal

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For the record

  • Who: bootlace worm

  • What: Longest animal

  • Where: United Kingdom

The longest species of worm of any kind is the bootlace worm (Lineus longissimus), a species of nemertean or ribbon worm, inhabiting shallow waters of the North Sea. In 1864, following a severe storm at St Andrews in Fife, UK, a record-breaking specimen was washed ashore, and was found to measure over 55 m (180 ft) long.


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