Lineus longissimus

The bootlace worm (Lineus longissimus) is one of the longest known animals, with specimens up to 55 m (180 ft) long and up to 10 centimetres (3.9 in) wide being reported. Its mucus is toxic.

Lineus longissimus

The bootlace worm (Lineus longissimus) is one of the longest known animals, with specimens up to 55 m (180 ft) long and up to 10 centimetres (3.9 in) wide being reported. Its mucus is toxic.