Hannes
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federgeistchen.bsky.social
Hannes
@federgeistchen.bsky.social
170 followers 70 following 210 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
Medieval Illuminated Manuscript Style? Haha
Quite unhinged, but I bet your interpretation would be amazing!

Example: This invertebran't
Medieval manuscript illumination. Half snail, half cat? Cat in a shell? Hermit crat?? Who knows. And it has antennae too.
November 12, 2025 at 7:18 PM
federgeistchen.bsky.social
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.
November 12, 2025 at 5:27 PM
federgeistchen.bsky.social
I also have a fossilised snail (actually a lot of them if you count all the tiny fossilised snail in this stone)! I do not know what species it is nor how old the fossil is.
It’s a fossilised snail from the side embedded in a rock matrix. The shell ranges from orange to white (but is mostly beige). The rock is also beige.
November 9, 2025 at 4:54 PM
federgeistchen.bsky.social
And another snail-stack!
They are also round, but they are not Rounded Snails.
A stack of 2 snails (this time of different species) on top of another on a sandy leaf. The bottom snail (Trochulus hispidus) is flat and hairy, the top snail (Pupilloidei indet.) is taller than wide but very tiny.
November 9, 2025 at 4:47 PM
federgeistchen.bsky.social
It's a #snail. It's round. It's literally named "Rounded Snail" :D
Two snails of the same species (Gonyodiscus rotundatus) stacked on top of each other, the top one being significantly smaller. The houses are very flat, with many ridges.
November 9, 2025 at 4:47 PM
federgeistchen.bsky.social
Speaking of asymmetrical crustaceans, look at this huge claw!

Pisidia longicornis, the Long-clawed Porcelain Crab (false crab).

#marinelife #crab #crustaceans #nature #macrophotography
A red and orange crab with a round body and an immense left claw. The legs have small spines on them. The antennae are „striped“ and extend 45° backwards.
November 7, 2025 at 3:43 PM
federgeistchen.bsky.social
New shell pic! Epitonium clathrus. I love the spiral pattern from the apex-view! It sort of reminds me of romansco (fractal) broccoli. :D

#marinelife #gastropod #snail #mollusc #photography #macrophotography #nature
An overview of Epitonium clathrus. Left: From the side with the aperture visible Top: From the apex Bottom: From the bottom Right: From the side, with the aperture facing away In the bottom right corner there is text with a scale bar and species name. The shell itself is white with a tall spire and 7 whorls in total. Notably, the shell has evenly spaced ribs that go from the bottom all the way to the tip.
November 6, 2025 at 3:33 PM
federgeistchen.bsky.social
I'm still weirded out by how large the proboscis in Glycera spp. is. You can see the two darker spots in the top right coil of this worm (Glycera fallax). Those are the jaws. The proboscis goes all the way to there.

#worms #polychaetes #annelid #marinelife #nature #invertebrates #macrophotography
A light pink polychaete worm with a magenta line down the center. Some parts are a bit yellowish.
November 4, 2025 at 4:21 PM
federgeistchen.bsky.social
I’m shooting a few mollusc photos for the profs at my university. This one (Calliostoma zizyphinum) is my favourite so far! :D

It’s a nice change not having to mind all the bristles and paddles of the polychaetes I usually deal with!

#marinelife #photography #mollusc #snail #invertebrates
Photos of Calliostoma zizyphinum from four different sides. The shell is cone shaped, roughly as tall as wide and has a beautiful red and white pattern. On the bottom right there is a scale bar and the scientific name (in grey).
November 3, 2025 at 11:36 AM
federgeistchen.bsky.social
No marine organism today, but a photo I’m very proud of nonetheless.
It even got awarded “best photo” at the Botanical Garden Bioblitz earlier this year. :D

It’s a portrait of Bembecia ichneumoniformes, a wasp mimicking butterfly.

#macro #macrophotography #nature #insect #butterfly #entomology
The image shows the head and part of the thorax. It is covered in bright yellow and dark brown scales. In the middle you can see one large complex eye and a smaller, singular eye above. The antennae are brownish. Only the lower half is on the photo.
October 2, 2025 at 12:00 PM
federgeistchen.bsky.social
I've not been very active recently, but I'm back for this #WormWednesday with a polychaete from my favourite Genus: Phyllodoce. :D

I think, this is P. mucosa.

#polychaete #worm #macrophotography #nature #naturephotography #marinelife
Closeup of P. mucosa on a black background. The worm is yellowish with brown spots and has a turquoise underside. It has transparent paddles on each segment and 6 long tentacular cirri on its head as well as four little antennae.
October 1, 2025 at 11:26 AM
federgeistchen.bsky.social
I don't really know what to do right now, I'm just waiting for some loading bars to finish loading, and I apparently have to be at the computer for this because otherwise it stops...

So I thought I'd share another cool animal: Hersiliodes latericius, a very orange copepod! :)

#MarineLife #Macro
A photo of Hersiliodes latericius under a microscope. The background was black-ish originally, but has been manually turned completely black. The copepod is translucent yellowish with bright orange streaks. (It looks like some inner organ is orange, but I don't really know.) It carries two large egg-sacs, which are also bright orange. The antennae are rather short.
June 2, 2025 at 6:05 PM
federgeistchen.bsky.social
:)

#orchid #plant #houseplant
Potted orchid with leaves at the base, a long stem and two yellow and green slipper-like flowers.
May 17, 2025 at 7:49 AM
federgeistchen.bsky.social
I haven't posted an animal in ages, but don't think I've run out! There's plenty more to come. This very fashionable blue and red amphipod for example!

I sadly don't know anything about it apart from that it is an amphipod.

#MarineLife #Macrophotography #Crustacean #Amphipod #Nature #Animal
A closeup of an amphipod against a background. You can see its left side. As mentioned, it is blue with red markings on each tergite. The eye is red as well.
May 13, 2025 at 2:35 PM
federgeistchen.bsky.social
Oh no! Due to City-Nature-Challenge craziness, I have totally forgotten about #InverteFest! D:

I hope I can make up for it with this collection of wonderful chitons, all of the species Lepidochitona cinerea, a species with amazing variety! :D

#MarineLife #Photography #Mollusks #MacroPhotography
Close up of a pale green L. cinerea against a black background. It has a white oval across shell plates 2 and 3 and a white arrow-like shape across shell plates 5-7 Close-up of a brown chiton with orange along the center line (except on shell plates 1 and 4) and pale bluish spots A pinkish L. cinerea with red "arrowheads" in the center of shell plates 2-7. The perinotum is pale with regularly spaced darker stripes. A grey marmorated L. cinerea with lots of tiny spots in green, brown, slightly blue. The Perinotum is of a pale brown
April 26, 2025 at 9:07 PM
federgeistchen.bsky.social
Here's a closeup of the head with those flappy things and all the little eyes. If you know what the flaps are called and what function they serve, please let me know! :D

#Platyhelminthes #Worms #FlatWorm
All has already been said. It's just a closeup of the head, also against a black background, but I did a poor job at cleaning the glass.
April 24, 2025 at 3:55 PM
federgeistchen.bsky.social
It's my first #InverteFest! 🥳
To celebrate, here is a flat worm "dressed" for the occasion! Very colourful. Very pretty. Very dragonfruit. :)
Prostheceraeus moseleyi typically feeds on Ascidians, and is found in rocky habitats.

#MarineLife #Macro #Macrophotography #Nature #FlatWorm #Worm
Top-down closeup of Prostheceraeus moseleyi against a black background. As the name "flat worm" suggests, it is indeed very flat. (This individual was not even 1mm thick, while being about 1cm in length) It has a white base colour with black spots throughout. The margin is yellow. The head has two dark purple flappy thingies, sticking up like feelers. I have no idea, sadly, what they are called. Barely visible on the photos and between the flaps are many tiny black pigment-spots which serve as eyes.
April 24, 2025 at 3:55 PM
federgeistchen.bsky.social
Here is a pic of the full worm!
Do you agree that it looks like a cow? I'm thinking more hippopotamus, tbh. Haha
Closeup of the full Nereididae indet. against a black background. Its colour is varied, with slightly greenish browns, pinks, purples, and oranges. A central red line goes down its center. Each segment contains a pair of rather thick parapodia.
April 23, 2025 at 3:53 PM
federgeistchen.bsky.social
It's #WormWednesday, so I have another polychaete for you!

It's a member of the Nereididae, some of which have jaws made of a very strong but light material. Who knows... Maybe we'll have spaceships made of worm-tooth one day!

#MarineLife #Worm #Polychaete #Invertebrates #Macro #MacroPhotography
A closeup photo of the head of Nereididae indet. against a black background. There are four pairs of tentacular cirri, two of which are long, and the other two short (about half the size of the long ones. The worm also has two small antennae, two palps, and a pair of red eyes. According to some of my fellow students its face looks kinda like a cow. :D In the lower part of the image you can see some of the parapodia with gills and chetae.
April 23, 2025 at 3:53 PM
federgeistchen.bsky.social
But that's not all of the strangeness! As you can see (especially in this closeup) this individual carries eggs. That means of course that it is... male!
Male pantopods have a pair of specialised extremities called "ovigers" to which they glue the egg-sacks after fertilisation.
4/4
An even-closer-up shot of the anterior part of the pantopod, highlighting the head (facing right) and the trunk including ovigers and egg sacks.
April 21, 2025 at 1:33 PM
federgeistchen.bsky.social
This one's cool! :D
It's a pantopod, presumably Nymphon gracile. It just crawled across my hand suddenly while I was looking for worms.
One of the few non-crustacean arthropods in the ocean, pantopods, like spiders, are chelicerates.
1/4

#MarineLife #Arthropod #Macro #MacroPhotography #MacroMonday
A closeup of a pantopod against a black background. In the center is its small body ("trunk") with eight very long legs branching off in all directions. The entire body-plan is very spindly. Two other extremities ("ovigers") to which pale orange egg sacks are glued are sort of tucked underneath. Towards the top, the head carries two large chelofores (at least I think that's what they are) and a proboscis. The body is translucent, showing the red organs (probably mainly the intestines) in both trunks and legs.
April 21, 2025 at 1:33 PM
federgeistchen.bsky.social
A very small little star: Asterina gibbosa
According to German Wikipedia it has the shape of a "slightly bloated pentagon". How rude! :(

It's quite smol too. This individual was about 1cm in diameter.

#MarineLife #Echinoderms #Starfish #Macro #Macrophotography #SlightlyBloatedPentagon
Closeup of Asterina gibbosa against a black background. It's not colourful (a sort of caramel-brown with a few pale orange spots), but it's still very cute! It has five short arms.
April 20, 2025 at 3:37 PM
federgeistchen.bsky.social
Here are some eggs for Easter for you. :)

Unlike most other easter-eggs, these were made by a butterfly instead of a bunny, though. :P
Happy Easter!

#nature #insect #easter #butterfly #macrophotography #easteregg #blueskyeasteregghunt
Macro-photo of the eggs of Pieris sp. (A Garden White) on a cabbage leaf. The eggs are yellow and American-Football-shaped with lots of ridges going down the sides.
April 20, 2025 at 5:14 AM
federgeistchen.bsky.social
Fluffy Crab! :D

#MarineLife #Crustacean #Crab #MacroPhotography
Closeup of the porcelain crab Porcellana platycheles. It has a round body with large claws and long antennae. It's caramel brown all over and is covered in hair-like structures.
April 18, 2025 at 7:15 PM
federgeistchen.bsky.social
Here's another of my photos from the excursion: The Aeolid nudibranch Aeolidiella sanguinea! Just look at those cerata! :D

Its name means "bloody", but I think "fiery" would have been a better fit. They, too, look like mythical creatures!

[1/2]

#MarineLife #Nudibranch #Mollusk #MacroPhotography
A closeup of the nudibranch Aeolidiella sanguinea against a black background. It's a bit translucent and of a bright orange colour. On its sides, it has lots of little cerata (tentacle-like outgrowths) that almost entirely cover the body. The gut extends into the cerata and apparently this individual has eaten well, turning the orange into more of a rust-colour. In many species of Aeolidian nudibranchs, the tips of the cerata contain cnidosacs, in which the stinging sells of cnidarians they feed on are stored as a defense mechanism. I don't know if that is the case for this species. On the head, there are four more antenna-like structures: a dorsal pair of rhinophores and a more ventral pair of oral tentacles. They all have a white tip (which, incidentally, is the key identifying feature for this species). The eyes can be seen as two small black dots above the rhinophores.
April 17, 2025 at 10:53 AM