Mane jellyfish? Hmmm....Definitely points.
The longest recorded animal was a specimen of the bootlace worm Lineus longissimus washed up on the shores of Britain that measured between 160 and 190 feet .
However, the British badly wanted this record and there is evidence that the animal has been stretched.
Secondly, bootlace worms themselves can stretch themselves abnormally long in a dangerous situation so it'd be like you measuring yourself while standing on tiptoe with your neck stretched up or even you hands above your head.
So excluding dubious results obtained from the bootlace worm by the British (ahem) and some others, what is the longest animal?