Reposted by Martin KroekerCrankyGrandma55 @crankygrandma55.bsky.social · 03/10/2026First frog of the season and he's calling AND EATING. You can see the moth leg in his mouth 215113
Reposted by Martin KroekerPhil Knutson, PhD @philknutson.bsky.social · 01/10/2026Lignin chemistry!! I’ve drawn a line tree with the lignin polymer behind it. I’ve drawn it as one single polymer throughout! This messy, highly irregular biopolymer gives plants structural strength and helps protect their cell walls. #sciart #chemsky 313534
Reposted by Martin KroekerKieran 🦘🇨🇦 @hellbendermuseum.bsky.social · 02/10/2026Proud to present my lifesize T. rex head, affectionately named Hannibal. I created this myself from start to finish- digital sculpture, resin 3D printing, painting, etc. Huge thanks to my friend @rj-palmer.com for instrumental crits and redlines during the sculpting process. 13237421017
Reposted by Martin KroekerIan Hussey @ianhussey.mmmdata.io · 28/09/2026Germany has cancelled funding for the German Cochrane Foundation. Bad news all around. Cochrane’s benefit to cost ratio is huge. @cochrane.org www.sueddeutsche.de/politik/wark...sueddeutsche.deBund streicht renommierter Cochrane-Stiftung die FörderungDie Cochrane-Stiftung, die seit Jahren die Nutzen medizinischer Therapien untersucht, soll künftig nicht mehr staatlich gefördert werden. 32914
Reposted by Martin KroekerSajad Alipour @sajadalipour98.bsky.social · 24/09/2026Allium derderianum Regel. Mazandaran, Iran July 2026 Elevation 2950m. Unfortunately, this species has disappeared from many of its natural habitats due to unsustainable and excessive harvesting by humans, particularly for its leaves and bulbs. #allium #botany #ecology #bulbplants 1456
Reposted by Martin KroekerBernoid @bernoid.bsky.social · 21/09/2026 Chlorociboria aeruginascens. #MushroomMonday 626746
Reposted by Martin KroekerQuil @quilbug.bsky.social · 10/09/2026Insectember day 8: Pyrops watanabei Common name: Lanternfly Wick the lanternfly does not hesitate to point its spear at any foe🤺 ✨Adopt Wick here: vgen.co/quilbug/shop 🎨 #insectember2026 #anthro #bugart #adopts 520060
Reposted by Martin KroekerNina Willburger @drnwillburger.bsky.social · 18/09/2026AQUAHUMAN! A hybrid figure merging human and fish-like features: scales, wide-open eyes, downturned corners of the mouth, distinctive traits reminiscent of sturgeons. Discovered at the Mesolithic settlement of Lepenski Vir, the sandstone sculpture dates to approximately 6200–5950 BC. 🧵1/3 📷 me 940096
Reposted by Martin KroekerRichard Lewington @rlewington2.bsky.social · 12/09/2026Celebrating receiving an advance copy of my new Magnum Opus (with 4,000 images), by catching a Clifden Nonpareil on the same day. 1218933
Reposted by Martin KroekerSajad Alipour @sajadalipour98.bsky.social · 04/09/2026Today, I had the unforgettable opportunity to visit Persepolis, one of the most remarkable surviving symbols of ancient Iran. Construction of this magnificent royal complex began under Darius I around 518 BCE. Pay close attention to the carvings on the stone walls 1459
Reposted by Martin KroekerThibaut Brunet @thibautbrunet.bsky.social · 02/09/2026🚨 New preprint alert! 🚨 Choanoflagellates reorganize their global cytoskeletal architecture within seconds to explore confined microspaces. This is the main PhD work of the amazing @maitefreired.bsky.social www.biorxiv.org/content/10.6... A tread 🧵⬇️biorxiv.orgRapid repurposing of microvillar content drives a flagellate-to-amoeboid switch in the closest relative of animalsAnimal cells extensively remodel their cytoskeleton during differentiation and can notably switch between two major motility modes: flagellum-based swimming and actin-based crawling. We previously sho... 316677
Reposted by Martin KroekerErin the Half-A-Bee @eemorrisart.bsky.social · 28/08/2026"A Nook & A Book - The Friendly Frog" is done! I've redrawn this piece about three times over the last few years and I feel like the colors finally match the original idea that I had in my head. :3 (And it's in my @inprnt.com shop! www.inprnt.com/gallery/eemo...) #art #animalart #illustration 1236
Reposted by Martin KroekerKetrinaDrawsALot @ketrinadrawsalot.bsky.social · 28/08/2026Excited to reveal "Native Frogs & Toads of California", my entry for the art competition at the Berkeley Frog Fest! 🐸 #SciArt #amphibians 0339
Martin Kroeker @kroekermartin.bsky.social · 29/08/2026Trying out the improved video... City musician Christiaan Winter playing carillon at the historic Cheese Market Scale Building in Alkmaar🇳🇱 000
Reposted by Martin Kroekerオワコマ @owarikomakix.bsky.social · 24/08/2026ひっさびさのフィールド!ナガレヒキガエル合宿です。やはりお盆過ぎると渋いですね、、辛うじて1匹。当地らしい派手な個体。ナガレヒキは良いカエル。 1415
Reposted by Martin KroekerSajad Alipour @sajadalipour98.bsky.social · 19/08/2026Onobrychis subnitens Bornm. Fabaceae West Azarbaijan, Mianeh June 2025 2349
Martin Kroeker @kroekermartin.bsky.social · 17/08/2026youtu.be/ANhA94ZqnEQyoutu.beStrandbeest evolution 2025YouTube video by theo jansen 010
Reposted by Martin KroekerJasmin LaBotaniste @labotaniste.bsky.social · 16/08/2026Where the #wildflowers grow! #botany #Alps #Poschiavo 082
Reposted by Martin KroekerMatt Bertone @bertonemyia.bsky.social · 15/08/2026Another neat #bug from Costa Rica, but this time it's very smooth and beautiful, like a little abstract painting. I love the iridescent green punctures! Hnnnggg 😋 #Scutelleridae: #Pachycoris torridus 15753186
Reposted by Martin KroekerDavid @incnaturalist.bsky.social · 15/08/2026Smooth as a horse’s ear, this stunning Saltwater croc gliding through the Singapore mangroves. 0747
Reposted by Martin KroekerJuliet Turner @juliet-turner.bsky.social · 12/08/2026Eclipse in the sun glare over Oxford 🌙 1707
Reposted by Martin KroekerKiabugboy @kiabugboy.bsky.social · 09/08/2026Deltoblastus from Permian Nusa Tenggara Timur #3danimation #Blender3D #SciArt #paleoart 736192
Reposted by Martin KroekerAnthony Etherin @anthonyetherin.bsky.social · 07/08/2026REMOTE METEOR (Sonnet) It sprints alone, a stone aglint — its tint and tone a throne of flint that twists and sparks its flight amidst the dark of night. 13510
Martin Kroeker @kroekermartin.bsky.social · 31/07/2026Umm, is that a bat circling under the ceiling (while I'm sitting here with only the light from my laptop screen)... that's a new one, normally I go looking for _them_ 040
Reposted by Martin KroekerA Watercolour A Day @awatercolouraday.bsky.social · 31/07/2026There you go! 3413
Reposted by Martin KroekerIgor Adameyko @adameykolab.bsky.social · 31/07/2026The kissing of sea slugs. Reminds me of Gustav Klimt paintings. Elysia viridis, commonly known as the solar-powered sea slug or sap-sucking slug, is uniquely distinguished by its rare ability to steal plant-like cellular machinery from the algae it eats and use it to perform photosynthesis. 26721
Reposted by Martin Kroekerdawn of the debb @debbshock.com · 30/07/2026this owl has just about had it with the bullshit and me too 312481483
Reposted by Martin KroekerStephan Spiekman @stephanspiekman.bsky.social · 29/07/2026Excited to share our new paper in Science Advances! Led by Dr Wei Wang at #IVPP in Beijing, it presents a complete skeleton of #Austronaga, the most marine of all archosauromorphs. To boot, this fossil preserves the oldest complete digestive tract of any reptile! www.science.org/doi/10.1126/... 513761
Reposted by Martin KroekerSajad Alipour @sajadalipour98.bsky.social · 26/07/2026Echinops cephalotes Asteraceae Iran Esfahan Shahreza June 2026 Elevation 1700m Iran is a major center of diversity for the genus Echinops, with 72 species recorded in the Flora of Iran, including 57 endemic species. #Echinops #Asteraceae #wildflowers #botany 28918
Reposted by Martin KroekerKiabugboy @kiabugboy.bsky.social · 25/07/2026Sphaerirhynchia #brachiopod #3danimation #Blender3D #SciArt #paleoart 927865
Reposted by Martin KroekerIgor Adameyko @adameykolab.bsky.social · 24/07/2026What a surprise - a tiny, 1 mm long planktonic bunny 🐰. This a chaetopterus worm larva. Kattegat, The North Sea 🌊 🔬 Chaetopterus, known as the parchment worm, is a highly specialized marine polychaete living the adult life inside self-constructed, papery tubes that resemble parchment paper. 0315
Reposted by Martin KroekerJohn Walters @johnwalterswildife.bsky.social · 24/07/2026Hummingbird Hawk Macroglossum stellatarum emerged 830 am yesterday 36 days since egg laid 630 pm 17 June at Quince Honey Farm, South Molton, Devon - an amazingly quick life cycle. In this record year the caterpillars are fairly easy to find on Bedstraws growing in sunny spots like walls and dunes. 211121
Reposted by Martin KroekerDr Mark D. Scherz @markscherz.bsky.social · 22/07/2026This little pebble is Rhombophryne kilonjy, a small, poorly known and obscure species related to R. ellae and R. quentini but found in lowland forest close to the coast in northwestern Madagascar. The name kilonjy means ‘pebble’ in Malagasy because, well, just look at it. 🧪🐸 📸 F. Andreone 1153
Reposted by Martin KroekerDr Mark D. Scherz @markscherz.bsky.social · 22/07/2026Rhombophryne quentini is an orange-thighed species from high-elevation in northern Madagascar. In 2020 I named the closely related R. ellae after my partner, Ella—so I took particularly great pleasure in naming this new species after our son, Quentin. A little family of frogs. 🧪🐸 📸 M. Vences 2164
Reposted by Martin KroekerAnthony Etherin @anthonyetherin.bsky.social · 21/07/2026WORD FACT The “minim” is a short vertical stroke used in handwriting. In Gothic scripts, many letters — such as m, n, and u — were made up of minims joined by fine connecting strokes. As a result, words like minimum could appear as a confusing row of vertical lines. [1/3] 1206
Reposted by Martin KroekerIgor Adameyko @adameykolab.bsky.social · 18/07/2026This pulsing orb is the advanced 1 mm larva of a sea angel ✨🌊🔬. Kattegat, The North Sea. Sea angels are my fav mollusks, and I’ve always been dreaming about seeing an advanced larva. 512332
Reposted by Martin KroekerJoschua Knüppe @joschuaknuppe.bsky.social · 13/07/2026After returning from Lithuania I finally caught up with Surviving Earth today. The Carboniferous was my favorite episode so far and not just because I made concept art for the Arthropleura. Important: I made this BEFORE the head material was published. 18025
Reposted by Martin KroekerJasmin LaBotaniste @labotaniste.bsky.social · 16/07/2026Psst: if you take the capsules apart they look like small owls 🥰 so cute! 0121
Reposted by Martin KroekerSue @cameratrapsue.bsky.social · 16/07/2026And now for something completely different. 360 degree camera tiny planet view of the apparent movement of the stars. Polaris is in the center of the smallest circle on the left of video. The white lines are the star trails from 10pm to 4am. This is something I've wanted to do for a while. 1315036
Reposted by Martin KroekerSarah McAnulty, Ph.D. @sarahmackattack.bsky.social · 12/07/2026It’s fuckin’ moth night 727420
Reposted by Martin KroekerJasmin LaBotaniste @labotaniste.bsky.social · 08/07/2026Where the wildflowers grow 💐 #wildflowers #Pyrenees 182
Reposted by Martin KroekerSajad Alipour @sajadalipour98.bsky.social · 08/07/2026Crocus dolatyarii Rukšāns Iridaceae West Azerbaijan, Iran 25th June 2026 Elevation 2800m #Crocus #Iridaceae #wildflower 0444
Reposted by Martin KroekerJasmin LaBotaniste @labotaniste.bsky.social · 04/07/2026A flower very close to my heart: Linnaea borealis. #wildflowers #botany #Alps 0202
Reposted by Martin KroekerProf. Ian Walker @ianwalker.bsky.social · 01/07/2026Map nerds have probably heard of Baarle-Hertog and its bonkers borders, but I've just been looking at the map of that area and noticed that the Holy Roman wackiness extends well outside the town. Imagine being this Dutch farmer who can't harvest his wheat without invading Belgium 3437
Reposted by Martin KroekerJasmin LaBotaniste @labotaniste.bsky.social · 29/06/2026Saxifraga stellaris floating on a mossy cushion in a cristal clear mountain stream ☁️💫 #wildflowers #botany #Alps 081
Reposted by Martin KroekerJasmin LaBotaniste @labotaniste.bsky.social · 28/06/2026A sea of green. Equisetum fluviatile #botany #fern #Alps 0154
Reposted by Martin KroekerSajad Alipour @sajadalipour98.bsky.social · 28/06/2026Puschkinia scilloides Blooming through the snow in the middle of summer. West Azerbaijan, Iran Yesterday Elevation 2350 213539