🎣 Overfishing urchins: A paradoxical path to marine sustainability
https://phys.org/news/2025-03-overfishing-urchins-paradoxical-path-marine.html
#urchins
Sea Urchin (Euechinoidea)
#SeaUrchin #ArtWithOpenSource #CCBYSA #MarineLife #Sealife #Darktable #Urchin #SeaUrchins #Urchins #Euechinoidea #Echinodermata #Animals #Animal #AnimalPhotography #WildlifePhotography #Nature #NaturePhotography #Photography
I came across a local crafter making merino beanies DYED WITH PURPLE SEA URCHINS (urchins are super invasive and we need to remove them asap from areas where there’s kelp for the rest of the animals and kelp) and of course I’m going to get one
You can get it at the Sealevel SF holiday bazaar Dec 14-22 or message Seelie Studio
Sea urchin in Lombok - Indonesia
#gili #islands #giliislands #lombok #diving #indonesia #padi #scuba #pets #coral #ocean #plongee #sealife #oceans #divecenter #marinelife #urchin #urchins
ICB
Don’t miss out on (@)blackinmarinescience ‘s
Black #Philanthropy Day marathon
& be sure to check out these free BIMS / ICB reads already up:
Combining #Morphological Characteristics and DNA Barcoding Techniques Confirm Sea #Urchins of the Genus Echinometra (Echinodermata: Echinoidea) in Marine #Habitat Located at Extreme Regions of the #Caribbean #Sea
https://doi.org/10.1093/icb/icae083
(@)stan_b_phd on X
&
https://doi.org/10.1093/icb/icae143
by (@)aquatickay2222 on X
finally listening to @KateShaw 's new episode about crinoids sea urchins.
https://strangeanimalspodcast.blubrry.net/2024/08/26/episode-395-crinoids-and-urchins/
#crinoids
#fossils
#urchins
#featherStars
#seaLilies
#echinoderrms
A couple images from a lovely pair of dives at Folly Cove in Gloucester, Massachusetts on Friday.
#scubaDiving #underwater #photography #underwaterPhotography #macroPhotography #fish #urchins #anemone #lobster #trap #cod #olympus #invertebrates
Sunflower stars, voracious predators, eat sea urchins. With the star population declining, urchins decimated the kelp forests along the #NorthPacific coast. This shift affected the deep intertidal ecosystem, making it difficult for juvenile fish to survive until they’re ready for the ocean, protecting bluffs from erosion, etc #pycnopodia #urchins #kelpforests The San Juan lab researchers found young stars could be more active in warmer waters and eat many more young urchins than adults.
See the dozens of #NewSpecies this #DeepSea robot just discovered https://www.washingtonpost.com/climate-environment/2024/02/24/new-species-deep-sea/
"Forests of ancient #corals. Clusters of undersea #urchins with cactus-like spikes, as if a desert had been inundated. Gardens of glassy #sponges, clinging to the slopes of an underwater mountain range soaring up thousands of feet from the #seafloor."
Season 8 Episode 15 "To The Max"
The group of #otters floats between amber stalks of #kelp, preening their coats and foraging for #urchins. Sheltered in a natural bay off #HaidaGwaii, one of the most unforgiving coastlines on the west coast of #Canada, the skittish mammals are hidden – from the fast-moving currents, and from groups that have pledged to shoot them on sight.
Why the return of sea otters to Canada’s west coast is making waves | #MarineLiife | The Guardian
https://www.theguardian.com/environment/2023/nov/30/shoot-or-shelter-why-the-return-of-sea-otters-to-haida-gwaii-isnt-welcomed-by-everyone
Seascapes of the #DeepSea https://oceanbites.org/seascapes-of-the-deep-sea/
Seascape #ecology in the vicinity of a Blake Ridge cold seep: Kellie Johnson et al. https://www.frontiersin.org/articles/10.3389/fmars.2023.1198226/full
"The #ColdSeep ecosystem included #mussels, #clams, #tubeworms, and #BacterialMats capable of harnessing energy from the methane and sulfur-rich environment through symbiosis... Outside the cold seep, #SeaStars, #urchins, and #SeaCucumbers dominated. The seep also seemed to be a hotspot for certain #predators such as #octopus"
"The researchers outlined guidelines for governments to provide long-distance larval drifters, like #urchins and #lobsters, as well as #MigratorSpecies, like #turtles and #sharks, with protected stopovers along coastal corridors. "
#MerineSanctuary
https://phys.org/news/2023-10-marine-areas-climate.html
Scientists identify 2022 sea urchin killer https://www.usf.edu/marine-science/news/2023/scientists-identify-2022-sea-urchin-killer.aspx
A scuticociliate causes mass mortality of #Diadema antillarum in the #Caribbean Sea https://www.science.org/doi/10.1126/sciadv.adg3200 by @virome_girl
"After identifying the #ciliate using genomic techniques, the team grew it in the lab and performed infection experiments... When it was introduced to healthy #urchins in an aquarium tank, the urchins died within a few days – just as they did in the ocean. That sealed the deal for confirming the killer."
Mystery pathogen is stripping sea #urchins of their flesh and turning them to skeletons — and it's spreading fast
A mysterious epidemic that began in the #Mediterranean at the start of the year looks set to wipe out all of the Mediterranean and #RedSea’s urchins, and possibly their #coral reefs too.
By Ben Turner, May 31, 2023
"Researchers spotted the first signs of the urchin plague in the Mediterranean Sea at the beginning of the year, when an invasive species of urchin began falling sick in waters around Greece and Turkey. From there, the disease appears to have spread southward through the Suez Canal to the Red Sea.
"Scientists are unsure of the exact disease causing the mass die-off, but they suspect it is a pathogenic ciliate parasite — a single-celled microorganism — which in 1983 eliminated the Caribbean’s entire sea urchin population. Before the parasite plague, the Caribbean was home to thriving tropical reefs, but since losing the sea urchins the reefs have been smothered by algal blooms that multiplied unchecked, blocking out sunlight and destroying around 90% of the region’s coral.
"The disease was only identified after a second wave hit the Caribbean in 2022, an event which gave scientists a second opportunity to study it.
"'The sea urchins are the reef's gardeners — they feed on the algae and prevent them from taking over and suffocating the corals that compete with them for sunlight,' Bronstein said. 'Unfortunately, these sea urchins no longer exist in the Gulf of Eilat [Aqaba] and are quickly disappearing from constantly expanding parts of the Red Sea further south.'
"The imperilment of the region’s corals is significant on both a local and global level. The Gulf of Aqaba is known for its numerous diving spots and is a popular tourist destination. And because the corals there evolved to high temperatures and salinity over millions of years, they are more resistant to climate change-driven temperature fluctuations that are killing off other coral reefs around the world."
#ClimateChange #ClimateCrisis #Extinction #Oceans
Read more: https://www.livescience.com/animals/mystery-pathogen-is-stripping-sea-urchins-of-their-flesh-and-turning-them-to-skeletons-and-its-spreading-fast
The cause of these infections has to do with the rise in ocean temperatures (link in comments). This is happening not just in the Caribbean, but the Black Sea and Red Sea (article in comments).
#Urchins are dying off across the #caribbean Scientists now know why
A type of single-celled microorganism associated with coral diseases is to blame
By Anna Gibbs, April 19, 2023
"#Scuticociliates are found across the world’s oceans. Given their ubiquity, it’s unknown what conditions may have allowed P. apodigitiformis to become so detrimental to the urchins. It’s also unclear how it causes infection."
#ClimateChange #ClimateCrisis #Extinction #Oceans
Read more:
https://www.sciencenews.org/article/urchins-dying-off-caribbean-disease
#Scientists have discovered that a #parasite is behind a severe die-off of long-spined #sea #urchins across the #Caribbean Sea, which has had devastating consequences for #coral #reefs and surrounding #marine #ecosystems.
#Microbiology #MarineBiology #EarthScience #sflorg
https://www.sflorg.com/2023/04/mcb04192301.html
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