Hannes
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federgeistchen.bsky.social
Hannes
@federgeistchen.bsky.social
220 followers 94 following 270 posts
Worm enthusiast 🪱 mollusc maniac 🐌 and crustacean fanatic 🦀
I just prefer my animals boneless…

23 | wildlife photographer | biology student

Non-animal-related account: @eyekosaeder.bsky.social
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federgeistchen.bsky.social
Hannes @federgeistchen.bsky.social · Nov 12
It is finally #WormWednesday again! 🪱
The perfect time to post my photo of this 40 cm long beast! :D

Scientific name: Phyllodoce lineata

↓ thread with more info ↓

#marinelife #polychaetes #invertebrates
Phyllodoce lineata against a black background. The head (top middle-left) has a bright yellow main colour, turning more muddy towards the tip. There are 4 short antennae located at the front as well as 4 pairs of long "tentacles" (tentacular cirri), 3 of which point backwards, and 1 forwards. In the front half, the back of the body, which is segmented as in all annelids, is also yellow with 3 brown spots per segment (one in the center, 2 on either side at the base of the parapodia). This gives the worm a stripy look. In the back half, the worm is entirely brown. The bottom side of the worm is a light turquoise colour and slightly iridescent. On each segment, the worm carries to leaf-shaped appendages, sometimes referred to as paddles.
Reposted by Hannes
elizabethbeston.bsky.social
My first ever UV microscopy image! This is a Halacaridae mite, but I think it might just be an exoskeleton. It glowed gloriously under the UV light source!

#marineplankton 🦑
February 3, 2026 at 6:32 PM
Reposted by Hannes
the-episiarch.bsky.social
Tergivelum cinnabarium is species of deep sea acorn worm which is noted for being a big fan of Junjo Ito's Uzumaki
#Invertebrate 🧪
www.sciencedirect.com/science/arti...
Four photos of the deep sea acorn worm Tergivelum cinnabarinum leaving a distinct, spiral-shaped feeding trail on the sediment. Photo from: Jones, D. O., Alt, C. H., Priede, I. G., Reid, W. D., Wigham, B. D., Billett, D. S., Gebruk, A. V., Rogacheva, A. & Gooday, A. J. (2013). Deep-sea surface-dwelling enteropneusts from the Mid-Atlantic Ridge: their ecology, distribution and mode of life. Deep Sea Research Part II: Topical Studies in Oceanography, 98, 374-387.
February 4, 2026 at 12:54 AM
federgeistchen.bsky.social
FedEx still hasn’t managed to deliver my package because apparently my address doesn’t exist. (Spoiler: It does which I happen to know because I live there)

They have now called me to confirm the address *again* and said, it will be delivered on Monday.
Wish me luck that they find it this time 😑
January 30, 2026 at 9:42 AM
federgeistchen.bsky.social
Oops. I almost said something positive about FedEx last week, when they managed to get my package from Japan to near my city in only 3 days.

(But then they tried to deliver it to somewhere in the wrong city and it has been stuck in that city since and the delivery date ._.)
January 26, 2026 at 12:33 PM
Reposted by Hannes
k-hermit.com
Look closely at the surface of the sea cucumber…

There’s a strange little creature hiding there!
This scale worm changes its coloring to match its sea cucumber host.

You’d never notice it unless it moves. Such amazing camouflage! ✨️
January 24, 2026 at 12:26 PM
federgeistchen.bsky.social
Interesting times ahead!
Just bought this microscope today and carried it (with the help of 4 different trains) halfway across Germany. My back hurts, I am exhausted, but it was very worth it!

#microscope #biology
Olympus BX41 compound microscope with trinocular head, fluorescence capability (has three filter cubes), and a phase contrast condenser. Next to it the power supply for the mercury vapour lamp. The microscope is fully functional (electronics and mechanics work perfectly) I just need to get some eye pieces and objectives.
January 18, 2026 at 9:11 PM
Reposted by Hannes
martynwarren.bsky.social
Dragon Flower Mantis
(Toxodera integrifolia)

#AppreciateADragonDay
Drawing of a dragon flower mantis as seen from above. The mantis is incredibly long and thin, with a mostly orange body and a very long yellow thorax.
January 17, 2026 at 8:40 AM
Reposted by Hannes
elizabethbeston.bsky.social
January 16, 2026 at 8:44 PM
federgeistchen.bsky.social
Another sponge from the university collection. This one is really weird! (If anyone knows has tips for ID, let me know! It wasn't labeled)

#MarineLife #Nature
A round, slightly oval sponge with lots of bumps against black background. It has a lot of long calcareous bristles sticking out. The opening (osculum) is pointing towards the right. On this side the Bristles are significantly shorter than on the other side. Some of the bristles end in a crown of backwards pointing spines.
January 13, 2026 at 11:08 AM
Reposted by Hannes
akasci.bsky.social
Check out these beautiful macro photographs of Slime Moulds by Barry Webb at www.barrywebbimages.co.uk/Images/Macro...

Additional links -
Fungi: www.barrywebbimages.co.uk/Images/Macro...
Instagram: www.instagram.com/barrywebbima...
Slime mould info: en.wikipedia.org/wiki/Slime_mo
#Nature
Barry Webb's photograph of glistening Comatricha nigra slime moulds titled "Glistening Slime Mould". It won the people's choice in the macro category of the British Photography Awards 2025 Photographed on an old, rotting fence post in my back garden. I used a spray bottle to create a wet foreground to add a reflection and give the image an extra dimension. These fruiting bodies are around 2.5mm tall. 56 images were focus stacked to create the final image. Camera settings: 2.0 sec, f3.2, ISO 400 Source: https://www.britishphotographyawards.org/2025-shortlist/shortlist/macro/glistening-slime-mould/d4795926-9090-4f80-b07b-e7a743ec9459
December 30, 2025 at 2:17 PM
federgeistchen.bsky.social
I tried that soap bubble freezing thing. Catastrophic failure. ☹️
January 8, 2026 at 12:24 PM
Reposted by Hannes
natclarke.bsky.social
Felt a little festive at the microscope this morning for #FluorescenceFriday 🎄

Here’s the nervous system of a juvenile sea star ⭐️

Green = acetylated tubulin, red = nuclei

Happy holidays!
Confocal microscopy image of a juvenile sea star (Patiria miniata) viewed from the oral side. The animal has a five-armed, star-shaped body with a central nerve ring. The nervous system is labeled in green, forming radial nerve cords extending into each arm, and cell nuclei are labeled in red throughout the animal. The image appears against a black background and has a holiday-ornament-like appearance.
December 19, 2025 at 5:32 PM
federgeistchen.bsky.social
Happy new year! :D
I have no pictures of fireworks, but I have this one of a siliceous sponge skeleton from the university collection.

#MarineLife #Photography
Sponge skeleton against black background: The whole thing is tube shaped, only the upper third is visible, coming into the frame from the bottom right corner. At the end, the spicules form an organic web-like structure, fanning out towards edges. On the side, the spicules are arranges horizontally and vertically, forming rectangles. There are additional fan-like formations at regular intervals.
January 2, 2026 at 12:32 PM
Reposted by Hannes
xenomatt.bsky.social
A juvenile jack sheltering in a crystal jelly. They are part of the daily diel migration which brings plankton and associated critters up from the depths to the surface at night.
Pic from Balayan Bay, Anilao

#Fishmas #MarineLife 🌿🐟
A white fish with yellow bars and yellow fin rays. Its dorsal and anal fins have very long yellow filaments extending from them. It is sheltering in the tentacles of a round, translucent jellyfish with short tentacles. #Blackwater #UnderwaterPhotography #MacroPhotography #Macro #Wildlife #WildlifePhotography #Nature #NaturePhotography A white fish with yellow bars and yellow fin rays. Its dorsal and anal fins have very long yellow filaments extending from them. It is sheltering in the tentacles of a round, translucent jellyfish with short tentacles. #Blackwater #UnderwaterPhotography #MacroPhotography #Macro #Wildlife #WildlifePhotography #Nature #NaturePhotography
December 19, 2025 at 1:02 AM
federgeistchen.bsky.social
For the 17th day of #Crustmas, I have another water flea. This one was found in a tropical greenhouse. It's Macrothrix sp., but the exact species is probably not determinable without DNA analysis(?)

Look at the snoot! :D

#pondlife #microscopy
A brightfield image of Macrothrix sp. It's shape is roughly like that of a daphniid, but it has an elephant-trunk-like snoot and long spines at the posterior margin of the carapace. It is completely transparent, only the gut is slightly yellowish
December 17, 2025 at 5:47 PM
federgeistchen.bsky.social
A copepod for #Crustmas day 15 🦀
This one's a Calanoid copepod from Spain which I sadly do not know how to ID further ( Help much appreciated! :D )
The enlarged antenna segments are interesting as well. I have no idea what they are for and why they're only on one antenna.

#marinelife #copepod
A calanoid copepod under the microscope. It has very long antennae with one antennae having thickened and orange segments in the center. Apart from that, the copepod appears colourless
December 15, 2025 at 6:17 PM
federgeistchen.bsky.social
It's the fourteenth day of #Crustmas and I bring you another amphipod. I really like its slight blue and red colouration. :D
It is probably Apohyale perieri, but I'm not quite sure.

#MarineLife #Crustacean #Amphipod
Amphipod against a black background. The main colour is blue with red margins on each of the tergites. The eyes and antennae are reddish as well. The last two pairs of pereopods extend backwards and have white tips. Overall, the body is smooth and rounded.
December 14, 2025 at 7:07 PM
federgeistchen.bsky.social
Omg it’s so precious! #crustmas
December 14, 2025 at 8:41 AM
Reposted by Hannes
k-hermit.com
🦐☘,, #invertebrates
December 14, 2025 at 8:33 AM
federgeistchen.bsky.social
#Crustmas Day 13 🦀
I‘ve posted this species recently (about a month ago), but this one has a different colouration and not such an enlarged claw. This is Pisidia longicornis, the Long-clawed Porcelain Crab.

#marinelife #crab
Pisidia longicornis against a black background. A brown individual with a marbled patterning on legs and back. It has a round body with three long legs visible on either side as well as a pair of claws. The right claw is slightly enlarged. It has very long antennae and big, round, red eyes.
December 13, 2025 at 5:06 PM
federgeistchen.bsky.social
#Crustmas Day 12
Green Shromp!

It’s the Chamaeleon Prawn (Hippolyte varians) and very variable in colouration as the name suggests. I don’t know what influences colour, but all I found at that region were green.

#MarineLife #Shrimp
Green shrimp against a black background. It has a long pointy rostrum and very large scaphocerites. The telson and uropods are also pretty long. Sadly I didn’t manage to take a lateral photo as it was quite jumpy
December 12, 2025 at 8:12 PM
Reposted by Hannes
dhilrukshi.bsky.social
Slipper Lobster Metamorphosis

Crustaceans display some of the most spectacular metamorphoses from free-swimming meroplankton to reef-dwelling adults.

Slipper lobsters (below) are closely related to rock lobsters but have a flattened body and short, wide antennae.

#Crustmas
Slipper lobster larva - it looks like a translucent, spider-like creature with large eyes. Image: https://australian.museum/learn/animals/plankton/crustacean-metamorphoses/ Slipper lobster juvenile. Image: https://australian.museum/learn/animals/plankton/crustacean-metamorphoses/
December 9, 2025 at 1:02 PM
federgeistchen.bsky.social
Also for #Crustmas: Fluffy crab! (not actually a true crab)
Porcellana platycheles, the Hairy Porcellain Crab.

#MarineLife
December 10, 2025 at 5:51 PM
federgeistchen.bsky.social
For the 10th day of #Crustmas 🦐, I found this Scapholebris (cf. mucronata) Daphniid that is infested with Chlorella(?) green algae.

I believe, they are parasitic, judging by the Daphniid‘s reduced mobility & the strange twitching motion of the antennae.

#microscopy #pondlife #parasites #crustacean
December 10, 2025 at 5:38 PM
Reposted by Hannes
martynwarren.bsky.social
Procreate tracks the number of individual marks I make, and I’m currently on 66,816!
A progress screenshot of my tiger beetle drawing, showing that one elytra is nearly finished, but the beetle is still lacking some much-needed legs.
December 9, 2025 at 5:16 PM