Thrilled to share the preprint from my PhD! 🥳 Where I characterised epithelial cell extrusion in a sea anemone 🔗 www.biorxiv.org/content/10.6... Big thanks to my supervisor @prhsteinmetz.bsky.social and coauthors @noahbruderer.bsky.social @lionlchristiaen.bsky.social at🇳🇴 @msarscentre.bsky.social ⬇️🧵

Our paper on the role of neurons in Nematostella head regeneration is now out at @currentbiology.bsky.social Big thank you to all collaborators, it was a pleasure! Ectopic head regeneration after nervous system ablation in a sea anemone: Current Biology www.cell.com/current-biol...

Happy #worldjellyfishday 🪼 Here is a juvenile Chrysaora colorata, one of my favourite species of scyphomedusa, native to the Californian coast.

Happy Ctenophore Day! These glowing ocean drifters look like jellyfish but aren’t! They’re comb jellies, shimmering creatures that light up the sea with rows of beating cilia 💙🌈 Which species can you identify? 👀 Most are raised in @pawelburkhardt.bsky.social lab #CtenophoreDay #CombJelly #Ctenophore

A double feature for today's #sciartseptember prompt venomous, cause I can't decide. We have two old drawings of mine featuring the box jellies chironex fleckeri and alatina alata...some of the most venomous yet beautiful animals in the world

For some three billion years, unicellular organisms ruled Earth. Then, around one billion years ago, a new chapter of life began go.nature.com/3JyRV4S

The lost jellyfish art of Ilona Richter, from Anita Brinckmann-Voss's 1970 book on jellyfish of the Mediterranean Sea... 🪼🧪🌿🌊

Marine biodiversity: Gone with the wind? Our dispatch out now in @currentbiology.bsky.social New research shows that wind and currents act as invisible barriers, reshaping our view of ocean connectivity. 🌊🪼 authors.elsevier.com/a/1lYLj3QW8S... @iramaegele.bsky.social @msarscentre.bsky.social

Our new paper on structure and growth of Porpita porpita - rdcu.be/etcY6 . Like Velella and Physalia, this is a colonial cnidarian that floats at the surface of the Ocean. The whole colony arises form a single embryo through clonal growth that gives rise to many specialized bodies.

Excited to share our new work on the 3D architecture of the ctenophore aboral organ! We explored its remarkable cellular diversity and integration with the syncytial nerve net, uncovering connectivity and insights into the evolution of sensory complexes. www.biorxiv.org/content/10.1...

Our new paper is out: "The 3D architecture of the ctenophore aboral organ & the evolution of complex integrative centers in animals. We reveal a remarkable cell type diversity, nerve net condensation, a multilayered circuit & gene expression profiles. www.biorxiv.org/content/10.1... #ctenophores

"‘We are perilously close to the point of no return’: Climate scientist on Amazon rainforest’s future." 🌏 www.theguardian.com/environment/...

Temperature records are being smashed in the Mediterranean Sea - and summer has just begun. #ClimateChange #ClimateJustice

It’s World Ocean Day! And you know what, we wouldn’t be talking about the ocean if it wasn’t for plankton. Plankton was the beginning of life on Earth, and plankton is what keeps the oceans alive today. It’s very important!! 1/2 #plankton 🦑

🌊 Happy World Ocean Day! 🌊 To celebrate the beauty and wonder of the Ocean, here is a close-up series of the jellyfish Cyanea lamarckii 🪼 These images were exhibited at the @universitetsmuseet.bsky.social inviting us to appreciate the ocean’s wonders up close. #WorldOceanDay #jellyfish

Cellular and transcriptional trajectories of neural fate specification in sea anemone uncover two modes of adult neurogenesis https://www.biorxiv.org/content/10.1101/2025.06.06.655355v1

Can tropical corals find refuge at higher latitudes under future warming? In our new paper in Science Advances, we argue that coral range expansion will be *far too slow* for most coral species to outpace climate change. 🪸🌊 www.science.org/doi/10.1126/... A short 🧵 (1/16)

New paper from the lab: Our teeth arose as sensory organs on the outside of the body of ancient jawless fish.!! Congrats to Yara Haridy and the team! Background and video: phys.org/news/2025-05... Open Access Paper: www.nature.com/articles/s41... News and Views: www.nature.com/articles/d41...

Delighted that our work on positional memory is now published. We asked how axolotl cells 'know' which part of the limb to regenerate after injury. www.nature.com/articles/s41... A joy to work with super team Sarah Plattner, Yuka Sugiura, Francisco Falcon and Elly Tanaka. 🧵1/14

We are very proud to share that the Centre's Appendicularian facility and head engineer/Oikopleura whisperer Anne Aasjord @aaasjord.bsky.social from @appygenetics.bsky.social are featured in a 🧪 documentary produced by @warholmfilm.bsky.social in collaboration with NORCE 🤩👏

I will forever be haunted by this footage. Trawling has only been filmed underwater a few times in documentary history, and never with such clarity. What’s so heart-rending about these shots is watching how the animals don’t just get swept up — they swim for their lives. 🌎🦑🧪

I’m very excited to share our work on the early evolution of animal regulatory genome architecture - the main project of my postdoc, carried out across two wonderful and inspirational labs of @arnausebe.bsky.social and @mamartirenom.bsky.social. www.nature.com/articles/s41...

"After living for nearly 100 years on this planet, I now understand the most important place on earth is not land, but at sea.” – Sir David Attenborough. 🌊 Ocean with #DavidAttenborough releases 8th May, a powerful new film about the health of the world’s ocean. We'll be watching! 🎬

I found the most charismatic little #shrimp living in this drifting #pyrosome. . . #tunicate #pelagic #blackwater #blackwaterdiving #blackwaterphotography #chrisgug #gugunderwater #gug

What better time to celebrate #InverteFest than during plankton season! Check out some of the wonders we found last week while sampling in the Norwegian fjords 🔬🌊 How many species can you identify? @pawelburkhardt.bsky.social @msarscentre.bsky.social

It was a joy to share our beautiful ctenophores at the Museum's 200th anniversary! 🔬🎊

New science shows #DeepSeaMining causes lasting damage. 44 years after a small test, the seabed remains scarred, ecosystems have not recovered, and species diversity lost. Full-scale mining would cause irreversible harm. #DefendTheDeep buff.ly/82Z053n

I was honoured to win the @curlewaction.bsky.social poetry prize; all the winning poems and artwork, and more about their great work, is on their website. Here’s the full poem, which I wrote about the presumed extinction of the Slender-billed Curlew. 🪶 #naturewriting #poetry

Our PhD student Louis Romette is optimizing long-term live-cell imaging. He just casually dropped this 65-hour movie of a growing neuron (div 3 to 6) with knocked-in actin 🔥🕶️ #realtimemicroscopy

Colossal’s bungled wolf announcement isn’t a conservation win. It’s a sad reminder of how the offensively rich want to foist their vision of the future on everyone. My latest for @slate.com

My group is hiring a new Postdoc to work on gene regulation and chromatin in Nematostella. Please RT! For more information see here: gahanlab.com tinyurl.com/34xke35d

We don't think it's gross! We don't want less relevant models to study wound healing! We're launching a new field of Menstruation Science at MIT! I hope you join us for the launch on April 9 in person and online! cgr.mit.edu/2025/03/17/s...

Striking new study from @archaeon-alex.bsky.social's lab just out in @science.org on multicellular development induced by compression in Archaea: www.science.org/doi/10.1126/...

Floating through inner space ✨️ This species of jellyfish, Poralia rufescens, is one most people will never see. It lives deep below the sea surface to thousands of meters and is usually seen floating near the seafloor, sometimes we see hundreds of them on an ROV dive!⁠

1/ Transposable elements are often called "jumping genes" because they mobilize within genomes. 🧬 But did you know they can also jump 𝘣𝘦𝘵𝘸𝘦𝘦𝘯 cells? 🤯 Our new study reveals how retrotransposons invade the germline directly from somatic cells. www.biorxiv.org/content/10.1... A short thread 🧵👇

The reality of Academia. Thank you to those who speak out despite the fear. youtube.com/watch?v=PENg...

A friend included this anti-acknowledgement section on her PhD thesis. She also added the proposition: “Systematic bullying and undermining of girls and women in STEM starts early on and is the reason why they do not stay in science and related fields.” Absurd we still need to go through this 🧪👩‍🔬

We offer three new positions to join BCA Phase 0: 1. A full-stack developer to work on the BCA database with @ebi.embl.org 2. A senior research technician to develop sc methods 3. A bioinformatician to analyze new atlases with @sangerinstitute.bsky.social Details below. Please, share and repost.

We had a lot of fun sharing our work in a magical atmosphere during the Researchers' Night at Bergen Aquarium ✨ Comb jelly and choanoflagellate puzzles were a hit! Very grateful for the invitation and curious visitors 🤩

Deep-sea amphipods are literally incorporating microplastics into their bodies. Our trash is reaching places we haven’t even explored yet. Great job, humanity. royalsocietypublishing.org/doi/10.1098/...

Stygiomedusa!!! AKA Giant phantom jelly. They are not very common to see, and SOI saw two back to back! These guys get to be huge. The bell can be 1 meter across, and arms up to 10 meters long! Dive 793 #AntarcticClimateConnections #MarineLife #SouthernOcean @schmidtocean.bsky.social

We are thrilled to announce the signing of a memorandum of understanding with the prestigious Paris Aquarium 🌊The partnership will focus on sharing expertise in ctenophore breeding, and “further spread our growing knowledge of marine living systems” - @lionlchristiaen.bsky.social 🔗⤵️

It is not too late to act on climate change because climate change is not pass/fail. Every faction of a degree matters and is worth fighting for. That's not propaganda or wishful thinking. It's evidence-based. Suggesting otherwise is as unscientific as climate denial, and just as damaging.

Temperature-related deaths in European cities could increase by up to 50% by the end of the century in the absence of climate change-mitigation policies, totalling up to 2.3 million additional deaths, suggests a paper published in Nature Medicine. https://go.nature.com/4glnYzU 🧪

What better way to start posting on Bluesky than by announcing that we are recruiting a postdoc! The project, funded by an HFSP grant, focuses on the role of the ECM in Clytia jellyfish regeneration. Initial appointment will be for 2 years. Learn more here: lnkd.in/eU6dVptj [Photo: A.Jan/LBDV]

Occasional reminder that there’s no, “it’s too late, its over” for anthropogenic climate change. Every molecule of CO2 that doesn’t go into the atmosphere makes a difference. Preventing 0.1 degree of warming makes a difference. Every bit of climate resilience we build together makes a difference.

Thrilled to see #choanoflagellates on the cover of Science Advances🤩. Our latest work "Electrical signaling and coordinated behavior in the closest relative of animals" out now. Link: www.science.org/doi/10.1126/... 👏 @jeffcolgren.bsky.social @msarscentre.bsky.social

“Collectively, we have a longer term (though not too much longer) decision to make. That decision is: Are we going to do climate change together, or separately?”

Our work on ctenophore reverse ⏪ development has now been picked up by National Geographic in three different countries 🤩. Check them out here: Spain: tinyurl.com/yzudcfzv Czechia: tinyurl.com/3m6uvthe Hungary: tinyurl.com/yc7phfh5 Original article @pnas.org: www.pnas.org/doi/10.1073/...