Jellyfish, corals, anemones… they have a couple things in common. They’re all cnidarians, and they all seem like they don’t really have a whole lot going on. They just sort of float around! But looks can be deceiving: this mysterious, blobby phylum holds many secrets!
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[Trivia Question]
Jellyfish with or against current
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6937341/
[Fact Off]
Moon jelly vortex
https://www.eurekalert.org/news-releases/626033
Boxer crabs and sea anemones
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5289105/
^ pictures in both these links
[Ask the Science Couch]
Peeing on jellyfish sting
Clip: https://www.youtube.com/watch?v=ZjTKKFSb9h8
https://www.mdpi.com/2072-6651/9/3/105/htm?xid=PS_smithsonian
https://www.smithsonianmag.com/travel/how-fix-jellyfish-sting-180963582/
https://www.smithsonianmag.com/science-nature/whats-behind-that-jellyfish-sting-2844876/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4728541/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3773479/
[Butt One More Thing]
Coral - good poop (clam) bad poop (surgeonfish)
https://pubmed.ncbi.nlm.nih.gov/33841351/
https://pubmed.ncbi.nlm.nih.gov/33326418/
https://www.frontiersin.org/articles/10.3389/fphys.2020.621111/full