Twitter Post Transcription
Deb JJ Lee (they) @jdebbiel · 22h ‮⋯
Learned that sea urchins have a single eye and now I'm physically ill
[Two photos, the first showing a sea urchin and the second more zoomed in on a small orange part in the middle of its body.]
Readers added context
That is a butthole.
inaturalist.org/guide_taxa/292...
Do you find this helpful? Rate it
Sounds like they tried to link that class’s lineage to an echidna, but gave up.
“echi(n)” means spiny or prickly, so echinacea, echidna, and echinoidea are all prickly