exoCean Laboratory
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exoceanlab.bsky.social
exoCean Laboratory
@exoceanlab.bsky.social
Laboratory of experimental oceanography based at CEREGE 🦚, Aix-en-Provence 🇫🇷. We culture, measure, and dissolve carbonates!
📨 [email protected]
🌡️🌊🫧🐚🪸🔬
@juliemeilland.bsky.social, @sulpis.bsky.social, @chalkyoceans.bsky.social
Thanks to @erc.europa.eu #Deep-C, we’re building reactors that reproduce the ocean’s most serious pressures, the kind you really don’t want to “beta test” at sea. We’ll revisit old mysteries from HMS Challenger, & bring deep-sea microbes into the lab to see what life does when the pressure is real.
December 23, 2025 at 6:21 PM
CaCO3 takes less volume dissolved between water and salts than as a crystal. Two consequences: higher pressure favors dissolution, and carbonate dissolution from acidification (very) slightly lowers sea level. Yep! Guaranteed to spice up the family dinner conversation. 🧠
December 23, 2025 at 6:21 PM
We spray the samples into a bright ball of plasma, which enables them to be made into ions and sent into the mass spec. Perfect for our tiny carbonate samples home-grown in the lab.
December 22, 2025 at 4:28 PM
(a nano-gramme is 10^-9 grammes, a billion times less than a gramme!). In the Mission Control room (love this feature...you can pilot the instrument and drink coffee!) we carefully input the sample information and let the automated machine do the rest.
December 22, 2025 at 4:28 PM
Ship time *scheduled!
December 21, 2025 at 7:14 PM
And...you. 🫵🏼! If you want to come work with us then get in touch.

Message us here, or head to the website in our profile details. 'Tis the season*.

*Of @cnrs.fr applications, good luck to everyone who is applying!
mariah carey is wearing a santa suit and smiling .
Alt: mariah carey is wearing a santa suit and smiling. All we want for Xmas (and other denominated vacations) is you to come and do some cool science with us.
media.tenor.com
December 20, 2025 at 5:35 PM
12 scientific papers 💻, 11 months of good weather 🌞, 10⁴ foram babies 🐚, 9 visiting scientists 👩🏼‍🔬👨🏾‍🔬, 8 successful boat missions 🛥️, 7 website visits 🙏🏼, 6 new hypotheses 💡...*5 gold rings*...4 defended masters 📜, 3 #ForCry mass spec methods 🔍, 2 #Deep-C reactors 🧿...
December 20, 2025 at 5:35 PM
At exoCean, we're ahead of the game, been dissolving carbonates for ages, for free 🧑‍🔬! We stay fundamental: carbonates, dissolution, pressure. Ocean alkalinity enhancement sits right at the overlap, so we look at what “more alkalinity” does to things like forams. Mechanisms before megatonnes 🔬
December 18, 2025 at 11:34 AM
In CNRS Le Journal (and to journalists brave enough to ask what alkalinity is), the message is simple: scientists don’t vote “yes/no” on mCDR, we provide the cards for society to decide, based on values, political choices, economical priorities. No MRV, no scaling. lejournal.cnrs.fr/articles/rec...
December 18, 2025 at 11:34 AM
Phronima are pelagic amphipods, tiny, transparent crustaceans drifting in the open ocean: pure sci-fi. Some species hollow out a gelatinous salp and turn it into a floating “barrel” shelter. Those big eyes are built for the dim mid-water world, where everything is either invisible or glowing.
December 17, 2025 at 4:39 PM
...The visit to Mainz is also a great opportunity to share samples. Thanks to everyone there for helping us out with some exciting new material.

Sample sharing is great, more people should do it. More info, less waste, & more collaborations.

The @exoceanlab.bsky.social is always open to sharing.
December 16, 2025 at 5:22 PM
As well as being a great opportunity to network, and wow people with their work on planktic foraminifera. Evolution and its impacts on foraminifera geochemistry for Jaime, and modern problems and data gathering for planktic foraminifera for Sonia...
December 16, 2025 at 5:22 PM