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C. Chen @ Jamsteeeec @squamiferum.bsky.social · 7d

[New Paper] in Zootaxa names new genus Lobatoradarea in the amphipod family Calliopiidae, with 10 new species found across a wide range of marine habitats from shallow subtidal waters to a deep-sea hydrothermal vent!

Link to the paper: mapress.com/zt/article/v...

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · 8d

We disembarked from research vessel R/V YOKOSUKA in #Chichijima Island, #Bonin ( #Ogasawara ) Islands! The only way back to the main island of Japan is by a biweekly 24-hours ferry trip, so we got a couple days to see the islands!

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · 12d

[New Paper] Names Pyropelta artemis, a new deep-sea limpet from the Off Hatsushima seep in Japan! This species 'shape-shifts' its shell to fit the substrate shape, which we likened to the moon's waxing and waning.

Just out in Contributions to Zoology, OPEN ACCESS: brill.com/view/journal...

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · 13d

Rare shots of JAMSTEC deep-sea research vessels: recovering HOV SHINKAI 6500 with the drilling vessel CHIKYU in the background!
Suruga Bay, Japan.

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Reposted by C. Chen @ Jamsteeeec

Chris Mah @echinoblog.bsky.social · Sep 1

NEW #DEEPSEA SNAIL WITH HARD SCALES! #molluscmonday

C. Chen @ Jamsteeeec @squamiferum.bsky.social · Aug 27

[New Paper] We found a SECOND SNAIL with HARD SCALES on the foot -- Ifremeria nautilei lives in deep-sea hot vents and makes chitinous scales not by secretion but by cell differentiation, like our own skin!

@royalsocietypublishing.org Proceedings B, OPEN ACCESS: doi.org/10.1098/rspb...

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Aug 27

[New Paper] We found a SECOND SNAIL with HARD SCALES on the foot -- Ifremeria nautilei lives in deep-sea hot vents and makes chitinous scales not by secretion but by cell differentiation, like our own skin!

@royalsocietypublishing.org Proceedings B, OPEN ACCESS: doi.org/10.1098/rspb...

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Reposted by C. Chen @ Jamsteeeec

Pensoft @pensoft.net · Jul 28

This article in BBC Wildlife outlines the discovery of a 'giant' limpet discovered 5,922m below the Pacific, described by @squamiferum.bsky.social in @zse.pensoft.net.

www.discoverwildlife.com/animal-facts...

Deep-sea submersible discovers 'giant' animal 5,922m down in Pacific abyss | Discover Wildlife

The creature was found during a deep-sea expedition 500km south-east of Japan.

www.discoverwildlife.com

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Reposted by C. Chen @ Jamsteeeec

高遠頼@生命科学VTuber @takatohlife.bsky.social · Jul 26

JAMSTECのしんかい6500の調査で、新種の巨大カサガイBathylepeta wadatsumiを発見

今までの同属の3 cmを上回る殻長40.5 mmという巨大さから漫画ONE PIECEに出てくる大入道ワダツミと日本神話の海神からwadatsumiと命名

謝辞や参考文献にONE PIECE魚人編が引用されています

【原著論文、画像引用元 (CC BY 4.0)】
zse.pensoft.net/article/1562...

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Jul 25

[New Paper] in @zse.pensoft.net names Bathylepeta wadatsumi, the world’s DEEPEST true limpet from 6 km deep! Giant sized (4 cm) for this depth, we named it after the god of sea in Japan & also the Large Monk “Wadatsumi” from the manga series ONE PIECE!
OPEN ACCESS: doi.org/10.3897/zse....

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Reposted by C. Chen @ Jamsteeeec

Zoosystematics and Evolution @zse.pensoft.net · Jul 24

A new species of deep-sea limpet, discovered 6 km beneath the northwestern Pacific, has beeen named after a #ONEPIECE character.

Find out why on the @pensoft.net blog: blog.pensoft.net/2025/07/24/n...

New deep-sea species named after ONE PIECE character

Found 6 km beneath the Pacific, the limpet's unusually large size inspired its name.

blog.pensoft.net

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Jul 24

[New Paper] in European J of Taxonomy names 1 new genus and 3 new species of XENOPHYOPHORES -- giant single-celled foraminifera! We integrate in situ imagery, dissection, SEM, micro-CT, and molecular phylogeny for unprecedentedly detailed descriptions for xenos.
OPEN ACCESS: doi.org/10.5852/ejt....

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Jul 19

[New Paper] Reveals 4 distinct metapopulations in the hot vent mussel Bathymodiolus septemdierum found across the Indo-W Pacific! With implications for conservation in the face of upcoming deep-sea mining.

Out now in Journal of Biogeography, OPEN ACCESS: doi.org/10.1111/jbi....

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Jul 13

[New Paper] reporting 8 distinct mollusc eggs from abyssal and hadal depths of Aleutian Trench is now out in Progress in Oceanography! With a potential Dumbo Octopus egg + at least 5 snail eggs!
OPEN ACCESS: www.sciencedirect.com/science/arti...

With @sigwartae.bsky.social @oceanspecies.bsky.social

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Jul 11

Definitely Fissurellidae.

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Jun 24

[New Paper] Uses phylogenomics to resolve how deep-sea symbiotic vesicomyid clams evolved to conquer the abyss; revising some the genus-level taxonomy along the way!

Just out in the journal Cladistics, read for FREE here: onlinelibrary.wiley.com/share/author...

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Jun 16

[New Paper] @zoojlinnsoc.bsky.social reports three capitellid polychaetes from Indian Ocean deep-sea hot vents, two of them described as new species! Phylogenetic analysis reveals two independent origins of capitellids in chemosynthetic ecosystems.

FREE ACCESS: academic.oup.com/zoolinnean/a...

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Jun 10

[New Paper] in The Nautilus names Naquetia confusa, a new species of muricid snail from Palawan, Philippines! It was previously confused with the morphologically similar N. vokesae from the Indian Ocean.

Read the paper: www.researchgate.net/publication/...

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Jun 6

[New Paper] @zoojlinnsoc.bsky.social presents 2 NEW deep-sea vent snails from Atlantic! Being giants for their genera, they're named after the giants "Gargantua and Pantagruel" in François Rabelais' novels. Peltospira gargantua is likely to have symbionts!

OPEN ACCESS: doi.org/10.1093/zool...

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Apr 27

Wow! Most likely a monoplacophoran. At this depth and habitat the only real options are monoplac or true limpet (Gastropoda) in family Lepetidae, and it looks closer to a monoplac. But its shell shape is different from known species and is almost certainly new! How big was it? Did they collect it??

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Apr 27

Looks like another Margaritidae.

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Apr 13

Margaritidae, probably!

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Apr 13

Raphitomidae, need to look at specimens to decide the genus.

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Apr 4

We’re off on a R/V Yokosuka / SHINKAI 6500 cruise !

en.wikipedia.org/wiki/DSV_Shi...

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C. Chen @ Jamsteeeec @squamiferum.bsky.social · Mar 19

To find out more about the “dracosphera” symbiosis, see our preprint here:

doi.org/10.1101/2025...

A multilamellar organelle for chemosymbiosis in an aplacophoran mollusc adapted to anoxic cold seep sediment

Symbiosis with chemoautotrophic bacteria has evolved in many animal lineages inhabiting reducing habitats such as hydrothermal vents, allowing these holobionts to thrive in dark biospheres[1][1]. In c...

doi.org

C. Chen @ Jamsteeeec @squamiferum.bsky.social · Mar 19

The Divine Dragon Glistenworm (Chaetoderma shenloong) we named is one of the TOP-TEN MARINE SPECIES OF 2024 @WRMarineSpecies !! It is actually a wormy mollusc from methane seeps, and uses a new organelle “dracosphera” (“Dragon Ball”) to house symbiotic bacteria!

Our paper: doi.org/10.3897/zse....

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