Paula Miramón

Ectopic head regeneration after nervous system ablation in a sea anemone Via genetic ablation of neurons, Mazloumi Gavgani et al. show that the nervous system is essential for defining axial polarity during whole-body regeneration in the sea anemone Nematostella vectensis.

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

Stunning!!!

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

How did life get multicellular? Five simple organisms could have the answer Single-celled species that often stick together in colonies have researchers rethinking the origin of animals.

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

firecracker like jellyfish from Anita Brinckmann-Voss's 1970 book on jellyfish of the Mediterranean Sea.

Wavy tentacles from Anita Brinckmann-Voss's 1970 book on jellyfish of the Mediterranean Sea.

red jellyfish from Anita Brinckmann-Voss's 1970 book on jellyfish of the Mediterranean Sea.

Orange jellyfish from Anita Brinckmann-Voss's 1970 book on jellyfish of the Mediterranean Sea.

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

Ctenophores!!! 🤓 Looking at some experts @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 Carlos Nobre, who has fought for decades to save the rainforest, says up to 70% of it could be lost if a tipping point is reached

"‘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

Thank you so much Omaya for your vulnerability in this interview, it goes a very long way.

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)

Teeth first evolved as sensory tissue in the armored exoskeletons of ancient fish, fossil scans find Anyone who has ever squirmed through a dental cleaning can tell you how sensitive teeth can be. This sensitivity gives important feedback about temperature, pressure—and yes, pain—as we bite and chew ...

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

Michael Sars Centre Appendicularian facility featured in a short documentary Head engineer Anne Aasjord collaborated with researchers at NORCE on a project to better understand the ecological relevance of the small planktonic animals. The work was recently highlighted in a doc...

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.
🌎🦑🧪

Huge congratulations Iana!!! 🙌🎉

Chromatin loops are an ancestral hallmark of the animal regulatory genome - Nature The physical organization of the genome in non-bilaterian animals and their closest unicellular relatives is characterized; comparative analysis shows chromatin looping is a conserved feature of ...

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...

Sir David Attenborough, 98, addresses nearing 'the end of his life' in new film Attenborough's new film coincides with his 99th birthday.

"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.
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#tunicate #pelagic #blackwater #blackwaterdiving #blackwaterphotography #chrisgug #gugunderwater #gug

Corymorpha nutans, it is also the first jelly that appears with the stomach full. They bud from a polyp like the one in this video from @alexandrejan.bsky.social. Crazy hydrozoans!

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! 🔬🎊