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#seastar

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Every year I participate in #ArtAdventCalendar. It’s a great way to fill your feeds with art at the end of the year. All are welcome & it’s definitely not just for people who celebrate Christmas. Join in! It can be a bit of an antidote to all the commercialism of the season cause it’s just about sharing art. I tend to focus on recent art. I made so many prints this year, I can share a piece from 2024 🧵

Raising Hungry #SeaStar Babies Is No Cinch baynature.org/article/raising-

"Not so long ago, you could count on #pycnopodia to devour #PurpleUrchins and keep them from eating too much #kelp. A decade ago, the mysterious wasting disease began plaguing #SeaStars, right around the time that a #MarineHeatWave struck... In the absence of their primary predator, urchin populations exploded. Since then they have mown across the sea floor unhindered, leaving urchin barrens where #KelpForests once flourished."

Long presumed to have no heads at all, #starfish may be nothing but
Naturalists have puzzled over what might constitute head of a #seastar, commonly called a "starfish." With five identical arms—any of which can take lead in propelling sea stars across seabed—it's been anybody's guess how to determine the front end of the organism from the back. Teams from Standford and Berkeley detected #genes associated with head development just about everywhere in juvenile sea stars
phys.org/news/2023-11-presumed