Episode 57: The Hidden Magic in the Sea Squirt

There is an animal that looks like a mistake. It has no face you would trust. It does not hunt. It does not run. It sits on a rock in cold water, pumps the ocean through a hole in its head, and filters dinner out of the dark.

In Korea they call it meongge. In Japan they call it hoya. On a plate it looks like something the sea coughed up and then thought better of. People eat it anyway. Raw. Sometimes still twitching.

Scientists have a colder name for the whole family: Ascidiacea. Sea squirts. And here is the part that should not be true. A fat hidden in that rubbery little sack was fed to old mice for two months. The mice found a hidden platform in a pool the way younger mice do. The connections in their brains thickened. The brain’s own immune cells stopped shouting. And the old coats on their backs grew new hair, darker, thicker, glossier.

If aging is a slow leak in the membrane of the self, somebody just found a patch in the tide. This is Episode 57: The Magic Sea Squirt.

Sources

https://www.frontiersin.org/journals/molecular-biosciences/articles/10.3389/fmolb.2022.815320/full

https://doi.org/10.3389/fmolb.2022.815320

https://pubmed.ncbi.nlm.nih.gov/35281262/

https://www.sciencedaily.com/releases/2026/09/260902234518.htm

https://www.lifespan.io/news/plasmalogens-alleviate-age-related-cognitive-decline-in-mice/

https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2026.1906996/full

https://doi.org/10.3389/fnut.2026.1906996

https://www.mdpi.com/1420-3049/28/17/6328

https://pmc.ncbi.nlm.nih.gov/articles/PMC10488995/

https://pmc.ncbi.nlm.nih.gov/articles/PMC5360580/

https://news.stanford.edu/stories/2026/05/electrical-pulses-rejuvenate-sea-squirts-offering-clues-on-human-aging