Alexandre Jan
banner
alexandrejan.bsky.social
Alexandre Jan
@alexandrejan.bsky.social
Ctenophore breeder for @pawelburkhardt.bsky.social lab at @msarscentre.bsky.social
ଳ Jellyfish photographer 🪼📷
All images are made by @alexandrejan.bsky.social (© Alexandre Jan)
Reproduction of any content without permission is prohibited.
Reposted by Alexandre Jan
Always great to visit Bergen Aquarium and see comb jellies exhibited in all their beauty 🌈

The comb jellies are now part of a permanent exhibit at the aquarium. #ctenophores #Bergen #aquarium

@alexandrejan.bsky.social, Simen Mannsåker & @msarscentre.bsky.social
January 22, 2026 at 5:07 PM
Reposted by Alexandre Jan
It’s such a joy working with these beautiful animals 😍😍
Huge thanks to @alexandrejan.bsky.social for capturing my gorgeous little creatures!
Can’t wait to share more cuke science and photos soon — stay tuned!
@msarscentre.bsky.social
November 18, 2025 at 11:27 AM
Happy #worldjellyfishday 🪼
Here is a juvenile Chrysaora colorata, one of my favourite species of scyphomedusa, native to the Californian coast.
November 3, 2025 at 8:54 PM
Reposted by Alexandre Jan
Happy #worldjellyfishday, everyone 🪼🪼🪼!

Jellyfish (and their blooms) are a fundamental part of marine ecosystems, significantly contributing to carbon transport and storage. An ocean without jellyfish would not be a healthy ocean.

@universitetsmuseet.bsky.social @unibergen.bsky.social
November 3, 2025 at 4:44 PM
Reposted by Alexandre Jan
A new paper just dropped a little while ago describing a new family for a common species of benthic ctenophore (comb jellies), Coeloplana meteoris, now known as Benthoplana meteoris. www.jse.ac.cn/EN/10.1111/j...
Benthoplanidae, a new family of benthic ctenophores (Platyctenida), based on morphological and genetic data
www.jse.ac.cn
October 28, 2025 at 9:45 PM
It swims to the LEFT (lobes and mouth first in search of prey) and to the RIGHT for a quick escape.
October 20, 2025 at 10:22 AM
I'm looking forward to your article about Pleurobrachia.

For the mouth, I would vote 1.
October 6, 2025 at 9:44 PM
It was a good attempt, but those species are found in the North Sea, North Atlantic Ocean and Mediterranean Sea, except one species from Japan

Mnemiopsis leidyi
Beroe cucumis
Coeloplana (Benthoplana) meteoris
Pleurobrachia pileus (2x)
Callianira bialata
Hormiphora plumosa
Bolinopsis infundibulum
October 6, 2025 at 10:36 AM
Bolinopsis, Leucothea, Mnemiopsis, Lampocteis, Beroe x3, Pleurobrachia, Haeckelia, sp. RedX, and Euplokamis, great catch!
October 4, 2025 at 9:48 PM
Impressive drawings, @beziostudio.bsky.social! So realistic — even some parasites are sneaking into the Beroe 🤯
October 4, 2025 at 6:30 PM
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
October 4, 2025 at 6:21 PM
🌊 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
June 8, 2025 at 8:46 PM
Reposted by Alexandre Jan
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!
April 30, 2025 at 6:50 PM
Reposted by Alexandre Jan
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
April 30, 2025 at 4:50 PM
Reposted by Alexandre Jan
It was an honor to take part in the celebration of 200 years of knowledge at @universitetsmuseet.bsky.social, together with colleagues from across @unibergen.bsky.social departments 🎉🎂 The Burkhardt group showcased comb jellies in the Museum's majestic whale hall ✨ @pawelburkhardt.bsky.social
April 29, 2025 at 2:45 PM
Reposted by Alexandre Jan
Director Alexis Powilewicz & aquarist Étienne Bourgouin from Paris Aquarium discuss the collaboration together with MSarsCentre Director @lionlchristiaen.bsky.social & @alexandrejan.bsky.social, ctenophore expert in the lab of @pawelburkhardt.bsky.social ✨🧪
tinyurl.com/yc7erub5
Michael Sars Centre partners with Paris Aquarium to introduce comb jellies to the public
The Michael Sars Centre at the University of Bergen and the Paris Aquarium have signed a Memorandum of Understanding (MoU) to exchange expertise on comb jelly husbandry. The collaboration marks a sign...
tinyurl.com
February 3, 2025 at 2:23 PM
Reposted by Alexandre Jan
The story made the cover of @biophysj.bsky.social with a beautiful shot of Littorina littorea and Malacoceros fuliginosus by @alexandrejan.bsky.social
April 1, 2025 at 2:55 PM
Our ctenophores say hi to Bluesky 👋🏼
November 26, 2024 at 9:32 PM
Wonderful Callianira antarctica 🤩💙
November 22, 2024 at 1:43 PM