iiinova — where your digital self keeps evolving

Reposted by Hannes Dahm

Polychaete Bob @polychaetebob.bsky.social · 08/08/2026

A few photos from last week's IPC15 conference in Frankfurt. Many thanks to Carly for capturing them

Hannes Dahm @federgeistchen.bsky.social · 09/09/2026

Next semester I'll start my Master's Degree and I just got my schedule. I'm so excited!! I have nothing but interesting courses! Aaaaah I cannot wait! :D

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Hannes Dahm @federgeistchen.bsky.social · 27/07/2026

Presented my poster at the IPC today. First time ever and also my first conference ever! Very scary!! >.< But I’m really happy with how it went, overall! :D The IPC is great! So much fun! So much interesting stuff! (Free cake as well!) Aaaaahdhfjdjdjdjdfjdjs :D

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Hannes Dahm @federgeistchen.bsky.social · 25/07/2026

Drosophila eggs look surprisingly cool under the microscope! Kinda makes me want to look at eggs of other insects too! #microscopy #macrophotography #zoology #drosophila

The egg of Drosophila cf. melanogaster under the microscope. It has a net-like pattern all across it and two long dorsal appendages protruding from one side, likely for supplying the embryo inside with oxygen

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Hannes Dahm @federgeistchen.bsky.social · 24/07/2026

I’ve been really quiet on here lately since I’ve been busy with designing a poster for IPC15. Aaaaah I’m so excited!! (It will be the first conference for me) Anyway, I fear I’ve left my page unattended for so long that mould has started to appear. Oh no! :0 #microscopy #fungi #mould #photography

Aspergillus sect. Nigri
Black mould photographed with flash + microscope at 10x objective magnification. The image shows various brown spheres which carry the conidiospores (visible as tiny blobs, if you zoom in).

Aspergillus sect. Flavi
A yellow Aspergillus. The conidia are even more visible here and form little rows that emanate from the heads like rays.

Unidentified blue mould.
The fruiting bodies on this one are very small, so you only see bunch of bluish-grey spheres.

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Reposted by Hannes Dahm

Moths in a human suit (they/them) @lycomorpha.bsky.social · 02/07/2026

I've had an idea in my sketchbook for awhile to draw cryptic moths (eg waved umber, green carpet) with part of the background faded or cut out. So you could appreciate how effective their camouflage is, & also how beautiful they are in their own right. I never got time to try it tho… Until now! 😁

Two very small outline sketches of hawkmoths on a circular background. The moths are only outlined, the circles are filled half in light brown and half in dark brown, in ink.

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Hannes Dahm @federgeistchen.bsky.social · 23/06/2026

So, I tried a new microscope technique today… Let’s just say it was successful! :D #microscopy

Closeup of the scutellum of Fasta fastuosa

An even-closer-up of the exoskeleton in that area

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Reposted by Hannes Dahm

Martyn Warren (he/him) @martynwarren.bsky.social · 21/06/2026

Here's another one, Eumolpus asclepiadeus.

Close up of a drawing of a very shiny blue beetle. It has a slighlty pitted surface on the elytra.

A zoomed out shot showing more of the shiny elytra.

A full body shot showing the beetle's splayed legs.

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Hannes Dahm @federgeistchen.bsky.social · 20/06/2026

My bad! Haha I put it in the alt text under the image. Forgot to put it in the post as well 😅

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Hannes Dahm @federgeistchen.bsky.social · 19/06/2026

Yes. It’s Parthenothrips dracaenae. One of the common species on houseplants

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Hannes Dahm @federgeistchen.bsky.social · 19/06/2026

So the bad news is that my plants have thrips. 😓 The good news is that I got a great photo! #thrips #microscopy #entomology

Darkfield micrograph of a thrips (Parthenothrips dracaenae). I spread the wings using a fine needle so that both pairs are visible.

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Hannes Dahm @federgeistchen.bsky.social · 04/06/2026

I was very surprised to find this beetle larva in my marine/brackish water sample today. I thought aquatic beetle larvae occurred exclusively in fresh water! If you have any idea as to what species/genus/family this belongs to, please let me know. I’m very curious! :D #microscopy #beetle #larva

Head of a beetle larva I found in a brackish/marine habitat. Brightfield microscopy. 10x objective

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Hannes Dahm @federgeistchen.bsky.social · 03/06/2026

I went to the sea last week and took some water for microscopy. Found a flatworm and just look at those cells! So pretty :D #microscopy #wormwednesday #flatworm

Photo of (almost) the entire worm in regular brightfield microscopy. The intestine is visible as a sort of meandering river of darker cells. Near the middle there is a repeating structure that I think may be eggs/egg-bundles/ovaries?

The middle part, zoomed in further. You can see the cells that line the intestine as well as the ovaries(?) more clearly

Detail of the front part with a large statocyst.

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Hannes Dahm @federgeistchen.bsky.social · 12/05/2026

Dammit! I just noticed I meant to write „they‘re all from different families“ 😭

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Hannes Dahm @federgeistchen.bsky.social · 12/05/2026

Ooh! What a great resource! I‘ve been looking for something like that! Nice :D

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Hannes Dahm @federgeistchen.bsky.social · 12/05/2026

Interesting! I’ll look for those later or tomorrow. I‘m from Germany. Thank you very much! :D

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Hannes Dahm @federgeistchen.bsky.social · 12/05/2026

Do you have any recommendations of what features to take photos of for IDing? ^^ I have the specimen in alcohol and could probably go up to the 20x objective on this one. A friend mentioned that the bristles on the claws were relevant?

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Hannes Dahm @federgeistchen.bsky.social · 12/05/2026

Thanks! Sadly not. I‘m not at all good with these. Family Chernetidae is as far as it has been IDed on iNat

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Hannes Dahm @federgeistchen.bsky.social · 11/05/2026

Found three different species of pseudoscorpions yesterday and they‘re all from different species as well! :D #arthropod #mesofauna #pseudoscorpion #arachnid

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Reposted by Hannes Dahm

Ari Ganahl 🦑🔞 @arithetonberry.bsky.social · 05/05/2026

I can finally share the Giant Clam illustration I created for @20kleagueszine.bsky.social !! 🐠🐡🦑 #invert This was my favorite illustration of 2025 :) My papercraft has evolved considerably over the last few years

Papercraft collage looking straight down at a giant clam on the ocean floor. Its flesh is a vivid blue, and its shell is textured and covered in moss. Around the clam are sea grass, isopods, coral, sea stars, sponges, and a rock structure.

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Reposted by Hannes Dahm

でんか @k-hermit.com · 03/05/2026

もちもち春の風物詩

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Reposted by Hannes Dahm

Peter Braubach @peterbraubach.bsky.social · 02/05/2026

Flabellospora acuminata - in a foam sample from northern hessia from last december. #AquaticHyphomycetes

Star shaped conidium of Flabellospora acuminata.

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Hannes Dahm @federgeistchen.bsky.social · 29/04/2026

I don’t remember whether I posted this one, but for this #WormWednesday here‘s Alentia gelatinosa! 🪱 #MarineLife #Polychaete

A. gelatinosa from below (ventral) showing the iridescence of the body. You can also make out the parapodia very well against the huge jelly-like scales.

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Hannes Dahm @federgeistchen.bsky.social · 29/04/2026

I‘ve gotten quite a few observations since my city participated in the CNC! Just joined the project! :D

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Hannes Dahm @federgeistchen.bsky.social · 29/04/2026

iNatting for the City Nature Challenge with spectacular scenery! #landscape #nature #iNat #citynaturechallenge

Me standing on the shore of a small lake that is surrounded by cliffs

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Hannes Dahm @federgeistchen.bsky.social · 29/04/2026

Ooh. I didn’t know there was an iNat project! Nice!

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Hannes Dahm @federgeistchen.bsky.social · 19/04/2026

I have also tried an alternate „more correct“ version with the medial antenna further towards the snout and the eyes a bit more to the back but it doesn’t look as cute

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Hannes Dahm @federgeistchen.bsky.social · 19/04/2026

If life hands you a deadline, draw polychaete stickers! (Am supposed to be working on velvet worm nephridia, but oh well…) #polychaete #worm #art #marinelife

A (non-realistic) „sticker“ I drew in procreate of Eulalia sp., a green paddle worm of the family Phyllodocidae.

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Hannes Dahm @federgeistchen.bsky.social · 10/04/2026

P.S.: This is true at least for Peripatopsidae. I think it‘s the same in Peripatidae too, but I‘m not sure P.P.S.: Drawings of the three nephridia in comparison coming soon! :D

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Hannes Dahm @federgeistchen.bsky.social · 10/04/2026

Onychophorans are weird. They have 3 different kinds of nephridia. Small ones in the first 3 pairs of legs. Huge ones in 4 and 5. And „typical“ ones in all the remaining ones. Also in 4 or 5, instead of having the opening (nephridiopore) at the base of the legs, they open right at the feet. Wth??

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Hannes Dahm @federgeistchen.bsky.social · 10/04/2026

It‘s been a while but I have location info! :D It’s from Antarctica. From the Weddell Sea

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Hannes Dahm @federgeistchen.bsky.social · 05/04/2026

Wow! Unfassbar schön! Die Farben! :D Ist das normales Dunkelfeld oder gibt es noch Tricks, um das Bild zu verbessern?

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Reposted by Hannes Dahm

christiannby.bsky.social @christiannby.bsky.social · 09/02/2026

Die letzten Wochen war hier alles gefroren. Einzig ein Entwässerungsgraben war eisfrei, aber in dem gibt es nur Ruderfußkrebse. Darum habe ich ausführlich Copepoden fotografiert. Von dorsal und ventral

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Reposted by Hannes Dahm

christiannby.bsky.social @christiannby.bsky.social · 16/02/2026

Harpacticoida Copepoden sind nicht leicht zu fotografieren. Ich habe nur sehr wenige Fotos von denen. Heute habe ich ein Weibchen ventral mit angehängter Spermatophore ablichten können.

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Hannes Dahm @federgeistchen.bsky.social · 03/04/2026

Breaking news! I have successfully adapted the camera to my microscope! Yaaay! Still need a bit more distance for parfocality with the eye pieces, so I‘m ordering a helicoid extension tube.

The head of my bx41 microscope with my camera adapted to the top of it.

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Hannes Dahm @federgeistchen.bsky.social · 02/04/2026

Stunning! I didn’t know you could get different colours like that with UV! :0

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Reposted by Hannes Dahm

Elizabeth Beston @elizabethbeston.bsky.social · 02/04/2026

This week’s UV copepods! I swear these colours are getting wilder every week. #marineplankton 🦑

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Hannes Dahm @federgeistchen.bsky.social · 02/04/2026

If you‘re in/around Bonn, definitely worth a visit! The exhibition is only around for a few days longer! (Until 06.04.)

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Hannes Dahm @federgeistchen.bsky.social · 02/04/2026

Went to a marine exhibition at the Bundeskunsthalle today. Great exhibition all the way through. But I was particularly stunned by the crocheted coral reef. I think this is one of the most beautiful and impressive works of art I‘ve seen. It‘s a collaboration by a few hundred (>1000?) artists.

A small part of the entire artwork. Crocheted corals of various kinds and other reef-life in yellows oranges and reds. It doesn’t even begin to capture the beauty of it irl

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Reposted by Hannes Dahm

Elizabeth Beston @elizabethbeston.bsky.social · 29/03/2026

Hello cutie squish squash Spionidae larva! A gorgeous little polychaete (bristle worm) larva from last week’s sample. #marineplankton 🦑

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Reposted by Hannes Dahm

でんか @k-hermit.com · 29/03/2026

✹✹✹

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Reposted by Hannes Dahm

Chris Mah @echinoblog.bsky.social · 02/04/2025

oh interesting! A polychaete Phyllodoce mucosa surrounding this green ball! is that where the species epithet comes from ? A mucus ball? eggs? interesting! #wormwednesday www.inaturalist.org/observations...

inaturalist.org

Phyllodoce mucosa

Phyllodoce mucosa from Isle of Man on March 30, 2025 at 04:10 PM by rhias

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Hannes Dahm @federgeistchen.bsky.social · 26/03/2026

That’s probably eggs, I think. But they look like that in a lot of Phyllodoce species. They also produce *tons* of defensive slime when they feel threatened. P. mucosa more than the others. I‘ve handled one once for photography and the amount of slime these little guys produce is unbelievable.

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Hannes Dahm @federgeistchen.bsky.social · 23/03/2026

Just a photo from yesterday‘s walk that‘s horribly overexposed, but that I like a lot. Spring is here! :D #cherryblossom #spring

View from underneath cherry tree in full pink bloom.
Due to the over-exposure the sky is almost completely white.

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