Alexandre Jan

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

03.11.2025 20:54 — 👍 10    🔁 3    💬 0    📌 0

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

03.11.2025 16:43 — 👍 32    🔁 11    💬 0    📌 1

Benthoplanidae, a new family of benthic ctenophores (Platyctenida), based on morphological and genetic data

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...

28.10.2025 21:45 — 👍 5    🔁 2    💬 0    📌 0

It swims to the LEFT (lobes and mouth first in search of prey) and to the RIGHT for a quick escape.

20.10.2025 10:22 — 👍 8    🔁 0    💬 0    📌 0

I'm looking forward to your article about Pleurobrachia.

For the mouth, I would vote 1.

06.10.2025 21:44 — 👍 0    🔁 0    💬 0    📌 0

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

06.10.2025 10:36 — 👍 0    🔁 0    💬 0    📌 0

Bolinopsis, Leucothea, Mnemiopsis, Lampocteis, Beroe x3, Pleurobrachia, Haeckelia, sp. RedX, and Euplokamis, great catch!

04.10.2025 21:48 — 👍 2    🔁 0    💬 1    📌 0

Impressive drawings, @beziostudio.bsky.social! So realistic — even some parasites are sneaking into the Beroe 🤯

04.10.2025 18:30 — 👍 1    🔁 0    💬 0    📌 0

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

04.10.2025 18:21 — 👍 1841    🔁 298    💬 45    📌 12

🌊 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

08.06.2025 20:46 — 👍 11    🔁 1    💬 0    📌 0

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!

30.04.2025 18:50 — 👍 10    🔁 2    💬 0    📌 0

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

30.04.2025 16:50 — 👍 48    🔁 10    💬 3    📌 0

Four people stand behind a booth in the Bergen University Museum Whale Hall. A skeleton is visible hanging from the ceiling, there are glass cases with specimens. At the booth, an aquarium, a laptop and scientific drawings are displayed.

An aquarium with comb jellies, lit from the side to highlight their delicate shape, is displayed on a table covered in a black tablecloth.

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

29.04.2025 14:45 — 👍 34    🔁 6    💬 1    📌 1

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...

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

03.02.2025 14:23 — 👍 17    🔁 1    💬 0    📌 0

The story made the cover of @biophysj.bsky.social with a beautiful shot of Littorina littorea and Malacoceros fuliginosus by @alexandrejan.bsky.social ✨

01.04.2025 14:55 — 👍 15    🔁 2    💬 1    📌 0

Our ctenophores say hi to Bluesky 👋🏼

26.11.2024 21:32 — 👍 36    🔁 9    💬 0    📌 0

Wonderful Callianira antarctica 🤩💙

22.11.2024 13:43 — 👍 1    🔁 0    💬 0    📌 0