- RESEARCH HIGHLIGHT
World’s longest animal boasts a potent poison
![The bootlace worm in a rock pool with crabs](https://cdn.statically.io/img/media.nature.com/w767/magazine-assets/d41586-018-03818-w/d41586-018-03818-w_15555786.jpg)
The bootlace worm usually measures 1–5 metres in length, but the longest specimen stretched to roughly 50 metres. Credit: www.aphotomarine.com
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Nature 556, 9 (2018)
doi: https://doi.org/10.1038/d41586-018-03818-w