On this #ForamFriday, I re-up this paper first-authored by @univ-amu.fr PhD student Vincent Guarinos, which is now formally published in @egubg.bsky.social:
doi.org/10.5194/bg-2...
With his PhD supervisors K. Tachikawa and @chalkyoceans.bsky.social at @climatecerege.bsky.social.
🧪 ⚒️ 🌊
#FossilFriday
doi.org/10.5194/bg-2...
With his PhD supervisors K. Tachikawa and @chalkyoceans.bsky.social at @climatecerege.bsky.social.
🧪 ⚒️ 🌊
#FossilFriday
August 21, 2026 at 5:10 PM
On this #ForamFriday, I re-up this paper first-authored by @univ-amu.fr PhD student Vincent Guarinos, which is now formally published in @egubg.bsky.social:
doi.org/10.5194/bg-2...
With his PhD supervisors K. Tachikawa and @chalkyoceans.bsky.social at @climatecerege.bsky.social.
🧪 ⚒️ 🌊
#FossilFriday
doi.org/10.5194/bg-2...
With his PhD supervisors K. Tachikawa and @chalkyoceans.bsky.social at @climatecerege.bsky.social.
🧪 ⚒️ 🌊
#FossilFriday
I'm happy to share two new #symbiosis papers freshly out of the press:
- Symbiont shuffling in foraminiferal holobiont doi.org/10.1093/isme... #foramfriday
- Ciliates symbionts in #deepsea shrimps doi.org/10.1111/jeu....
- Symbiont shuffling in foraminiferal holobiont doi.org/10.1093/isme... #foramfriday
- Ciliates symbionts in #deepsea shrimps doi.org/10.1111/jeu....
Thermal responses and Symbiodiniaceae shuffling in a Red Sea foraminifer holobiont
Abstract. Symbiont-bearing benthic foraminifera, like corals, rely on endosymbionts for growth and nutrition and experience bleaching under heat stress. So
doi.org
August 21, 2026 at 7:28 AM
I'm happy to share two new #symbiosis papers freshly out of the press:
- Symbiont shuffling in foraminiferal holobiont doi.org/10.1093/isme... #foramfriday
- Ciliates symbionts in #deepsea shrimps doi.org/10.1111/jeu....
- Symbiont shuffling in foraminiferal holobiont doi.org/10.1093/isme... #foramfriday
- Ciliates symbionts in #deepsea shrimps doi.org/10.1111/jeu....
MORE of these discoid Philippine forams! This one called Amphisorus #foramfriday www.inaturalist.org/observations...
Genus Amphisorus
Amphisorus from Romblon Pass, Philippines on August 25, 2024 at 09:40 AM by caleidoskopable
www.inaturalist.org
May 22, 2026 at 3:21 PM
MORE of these discoid Philippine forams! This one called Amphisorus #foramfriday www.inaturalist.org/observations...
OH WOW! not just one but a BUNCH of these Marginopora in situ! #foramfriday in the Philippines! What are they doing I wonder? www.inaturalist.org/observations...
Marginopora vertebralis
Marginopora vertebralis from Coron, Province de Palawan, Philippines on December 2, 2024 at 06:19 AM by Benoît Segerer
www.inaturalist.org
May 22, 2026 at 3:20 PM
OH WOW! not just one but a BUNCH of these Marginopora in situ! #foramfriday in the Philippines! What are they doing I wonder? www.inaturalist.org/observations...
More of these gorgeous Sorites-this one from Guadeloupe! #foramfriday www.inaturalist.org/observations...
Sorites orbiculus
Sorites orbiculus from Baille argent, Pointe-Noire 97116, Guadeloupe on November 2, 2023 at 09:38 AM by Julie Mellinger
www.inaturalist.org
May 22, 2026 at 3:19 PM
More of these gorgeous Sorites-this one from Guadeloupe! #foramfriday www.inaturalist.org/observations...
oh Wow. Sorites orbiculus #foramfriday www.inaturalist.org/observations...
Sorites orbiculus
Sorites orbiculus from Anse Colas, Bouillante, Guadeloupe on May 1, 2024 at 11:46 AM by Julie Mellinger
www.inaturalist.org
May 22, 2026 at 3:18 PM
oh Wow. Sorites orbiculus #foramfriday www.inaturalist.org/observations...
More Marginopora #foramfriday tropical shallow-water from Madagascar! www.inaturalist.org/observations...
Marginopora vertebralis
Marginopora vertebralis from Diana, MG-AS, MG on September 30, 2025 at 11:05 AM by Juan José Areso
www.inaturalist.org
May 22, 2026 at 3:17 PM
More Marginopora #foramfriday tropical shallow-water from Madagascar! www.inaturalist.org/observations...
An interesting discoid foram called Marginopora! I've seen these in museum collections- surprised that they were alive! this one from Madagascar! #foramfriday www.inaturalist.org/observations...
Marginopora vertebralis
Marginopora vertebralis from Diana, MG-AS, MG on September 30, 2025 at 11:16 AM by Juan José Areso
www.inaturalist.org
May 22, 2026 at 3:16 PM
An interesting discoid foram called Marginopora! I've seen these in museum collections- surprised that they were alive! this one from Madagascar! #foramfriday www.inaturalist.org/observations...
Rotaliida! #foramfriday cool looking but yeah, I got nothin! www.inaturalist.org/observations...
Order Rotaliida
Rotaliida from El Pinet, Alicante on March 14, 2026 at 09:19 PM by Petra Antl. 40x agua de mar
www.inaturalist.org
May 22, 2026 at 3:14 PM
Rotaliida! #foramfriday cool looking but yeah, I got nothin! www.inaturalist.org/observations...
More Elphidium.. possibly alive? #foramfriday www.inaturalist.org/observations...
Elphidium strigilatum
Elphidium strigilatum from Bouches-du-Rhône, Provence-Alpes-Côte d'Azur, FR on April 25, 2026 at 11:03 PM by Frédéric ANDRE
www.inaturalist.org
May 22, 2026 at 3:12 PM
More Elphidium.. possibly alive? #foramfriday www.inaturalist.org/observations...
#foramfriday TESTS! (i.e. skeletons of the ameoebas) but love the shapes! www.inaturalist.org/observations...
Elphidium crispum
Elphidium crispum from Port Macquarie NSW 2444, Australia on April 30, 2026 at 08:30 AM by James K. Douch. In intertidal shell grit. Stacked stereomicroscopy.
www.inaturalist.org
May 22, 2026 at 3:12 PM
#foramfriday TESTS! (i.e. skeletons of the ameoebas) but love the shapes! www.inaturalist.org/observations...
These look more like specimens-but lovely geometries! #foramfriday www.inaturalist.org/observations...
Elphidium crispum
Elphidium crispum in May 2026 by Anonimous Pug
www.inaturalist.org
May 22, 2026 at 3:09 PM
These look more like specimens-but lovely geometries! #foramfriday www.inaturalist.org/observations...
A xenophyophore (macrosized protist!) to the right, a dome-shaped sponge? to the left. What conversations they must have! #spongethursday #okeanos Lumpy Seamount North Atlantic
May 22, 2026 at 3:07 PM
Meanwhile, in the platform formerly known as Twitter, we are discussing Xenophyophore (which is actually a type of deep water larger benthic #foraminifera).
May 22, 2026 at 3:06 PM
The Xenophyophore is a single-celled organism that can grow several inches across, building its body out of sand, shells, and other seafloor debris. It’s a walking trash castle, but it’s thriving. #marinelife #science
May 22, 2026 at 3:06 PM
May 22, 2026 at 3:05 PM
Rhizaria is a magical branch where multiple lineages evolved multicellularity, macroscopic size, and/or photosynthetic symbiosis independently from their kelp & plant relatives. Some forams, Gromia, and the collodarians can all grow to significant sizes, easily visible without magnification
May 22, 2026 at 3:05 PM
May 22, 2026 at 3:04 PM
My FAVORITE of "giant foram" videos! The "Star Sand" in #TIMELAPSE from collected sediments in Okinawa! You can see the PSEUDOPODS moving! and these are freakin PROTISTS! single cells! #Foramfriday youtu.be/rCywHV69iME?...
沖縄の海の星砂たち - Star sand in the sea
YouTube video by 新江ノ島水族館公式チャンネル
youtu.be
May 22, 2026 at 2:58 PM
My FAVORITE of "giant foram" videos! The "Star Sand" in #TIMELAPSE from collected sediments in Okinawa! You can see the PSEUDOPODS moving! and these are freakin PROTISTS! single cells! #Foramfriday youtu.be/rCywHV69iME?...
STUNNING living foraminifera in situ video by @schmidtocean.bsky.social #foramfriday youtu.be/Yv_ud_Vp6ac?...
Wow. Foraminifera! #livingbioreactors #midwater #ocean #science
YouTube video by Schmidt Ocean Institute
youtu.be
May 22, 2026 at 2:53 PM
STUNNING living foraminifera in situ video by @schmidtocean.bsky.social #foramfriday youtu.be/Yv_ud_Vp6ac?...
Pseudopodia of the foraminifer Ammonia 🐾
The organism itself moves slowly, but inside, particles shuttle back and forth at high speed 🚚
This behavior is thought to involve the cytoskeleton (actin and microtubules) and motor proteins that move along them 🔬
The organism itself moves slowly, but inside, particles shuttle back and forth at high speed 🚚
This behavior is thought to involve the cytoskeleton (actin and microtubules) and motor proteins that move along them 🔬
May 22, 2026 at 2:51 PM
Tiny Baculogypsina (“star sand”), Calcarina (“sun sand”), and Neorotalia — all foraminifera! They really are adorable, aren’t they?
ちっちゃい太陽の砂とホシズナとネオロタリア カルカーです！ やっぱかわいいよね〜
ちっちゃい太陽の砂とホシズナとネオロタリア カルカーです！ やっぱかわいいよね〜
May 22, 2026 at 2:51 PM
Globigerina bulloides d’ORBIGNY
Foraminifera, unicellular organisms of the sea
Planktonic life species
The long diameter is about 200 μm from
It is also cute to see the interference color under a differential interference microscope
Thin spines are also made of calcium carbonate
Foraminifera, unicellular organisms of the sea
Planktonic life species
The long diameter is about 200 μm from
It is also cute to see the interference color under a differential interference microscope
Thin spines are also made of calcium carbonate
May 22, 2026 at 2:50 PM
These are some very unhappy Globigerina bulloides #Forams. I have no idea what is going on here. Are they decalcifying? What are the vacuoles around the specimen? Until this field season, I had never observed this. These were also in the high CO2 "bad water". Has anyone observed this before?
May 22, 2026 at 2:50 PM