I assume they have some conception of light, they have eyes[0], and emit bioluminescent mucus. I'm assuming that their conception is "light = danger". Although

I assume they have some conception of light, they have eyes[0], and emit bioluminescent mucus. I'm assuming that their conception is "light = danger". Although I can't find any info if they're one of the blind species of polychaetes. This paper[1] implies they have photoreceptors (I think, I'm a layman who only knows some of the words in it), but more importantly, it just gave me a name for my next synthwave band: Tentacular Cirri. [0]: https://zooplankton.nl/en/diversity/tomopteris/ https://zooplankton.nl/en/diversity/tomopteris/ [1]: https://link.springer.com/article/10.1007/s13127-023-00603-0 https://link.springer.com/article/10.1007/s13127-023-00603-0