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deepgreenravine

@deepgreenravine.bsky.social
734 followers 377 following 355 posts

hannah cohen (they/them) • scientific illustrator • fine artist • working in traditional media • www.deepgreenravine.com (views my own)

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deepgreenravine @deepgreenravine.bsky.social · 06/09/2026
tuesday tuesday TUESDAY #sciart
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deepgreenravine @deepgreenravine.bsky.social · 31/08/2026
Vertebrate Anatomy for Artists is also available asynchronously for a reduced price - if that interests you, please email me directly! Either way, I’d love to see you there. #sciart
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deepgreenravine @deepgreenravine.bsky.social · 31/08/2026
Hi! Starting in a couple weeks I’ll be teaching Vertebrate Anatomy for Artists online through the LAA. This 8-week course runs on Tuesdays from 530p-8p EST, 9/8-10/27. We’ll focus on form, function, and artistic technique. The link to sign up is in my bio.
Thjs image features the title and dates of the course, a QR code to scan for signup, and an illustration of the musculoskeletal system of a spotted hyena (Crocuta crocuta). #sciart
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Tisha Mark @tishamark.com · 29/05/2026
I have a commission slot open for June if anyone is interested! My contact info is on my website - give me a shout and let's chat about what we could create together! 😊🎨 tishamark.com #art #OilPainting #SciArt #TraditionalArt
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deepgreenravine @deepgreenravine.bsky.social · 29/05/2026
Here is a little sneak preview of some recent fish illustrations! These are the four subspecies of cutthroat trout found in CO. The differences are subtle, but they’re there - can you tell them apart?
This is a square image split into four. Each window shows the midsection of a different cutthroat trout, which are generally olive/bronze dorsally fading into yellow on the flank and pink or yellow on the belly. Black speckles of different shapes cover the body. 

Top left: Colorado River cutthroat trout 
Top right: Snake River cutthroat trout (non-native) 
Bottom left: Greenback cutthroat trout
Bottom right: Rio Grande cutthroat trout

#sciart
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Scientific American @sciam.bsky.social · 26/05/2026
Listen in on scientists finding (and falling for) a new species of octopus now called Microeledone galapagensis. Read more here www.scientificamerican.com/article/tiny...
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David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · 24/05/2026
Ocean census reveals more than 1,100 new species
scientificamerican.com
Ocean census reveals more than 1,100 new species
Over the course of 13 expeditions and other efforts between mid-2025 and mid-2026, scientists found hundreds of previously undiscovered creatures living under the waves
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deepgreenravine @deepgreenravine.bsky.social · 24/05/2026
I’d also like to say that I’m presently available to work with any scientists, educators, academics, and other professionals seeking illustrations to accompany journal articles, write-ups, exhibits, educational materials, etc. If this sounds like you, please reach out via email!
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Patrick Lynch @patrlynch1.bsky.social · 24/05/2026
Something you can easily do in digital illustration: Repurpose an older piece for a new thing on nocturnal predation. My illustration and photos. See the ALT text. 🧪🌿🌎🪶🐡 #wildlife #scicomm #sciviz #wildlifeart #illustration #scientificillustration #natureart #visualscicomm #sciviz #scicomm #owls
My illustration of a perched Great Horned Owl in a swamp at night. I was writing a section of my book "PONDS: An Illustrated Guide" on nocturnal predators in freshwater environments, and I realized that I could repurpose an older GHO illustration of mine. I shot a local marsh at night for the purpose, and added a separate tele shot of the moon to light the scene.
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deepgreenravine @deepgreenravine.bsky.social · 24/05/2026
Green brittle star (Ophiarachna incrassata) / colored pencil on Duralar / 2026 I’ve been gone for a hot minute, but the time has come for me to get back in the habit of posting here. Here’s a brittle star!
This is a realistic drawing of a green brittle star - a starfish-like animal with a small, round central disk and five snaky arms. #sciart
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deepgreenravine @deepgreenravine.bsky.social · 18/09/2025
oh i looooove this.
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deepgreenravine @deepgreenravine.bsky.social · 17/09/2025
me, working, minding my own business: Rat Underpant:
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deepgreenravine @deepgreenravine.bsky.social · 16/09/2025
hi all - this is a little last-minute, but since I’m back here on Bluesky I figured I’d share! tomorrow I start teaching an 8-week online course on fish anatomy for artists through the Lyme Art Association. if it fits into your schedule, please join me! lymeartassociation.org/online-class...
This graphic depicts a drawing of shark teeth and shares some information about the course, which takes place online on Wednesdays from 530p-8p EST and runs from 9/17-11/5. #sciartThis is a colored pencil drawing of an anglerfish on black paper.This is a black-and-white pen drawing of a Rio Grande silvery minnow, labeled with its common name and its scientific name (Hybognathus amarus) as well as its average size (3.5” in length).This is an infographic about the bowmouth guitarfish (Rhina ancylostoma) and its dentition. Drawings show the whole animal, a ventral view of its mouth and gills, and its jawbones. Text reads as follows:

The bowmouth guitarfish is a large demersal fish native to the warm waters of the Indo-West Pacific Ocean. These unique fish are unfortunately critically endangered, but they generally fare well in captivity and can be seen in aquariums around the world.

Despite their elongated bodies, bowmouth guitarfish are rays. Adults may approach 9’ in length. They are armored for sally with ridges of bony thorns over their eyes and along their backs, and dappled with lighter spots.

As with other rays, the guitarfish’s mouth, nose, and gills are positioned ventrally - on the underside of its head. Bowmouths feed on smaller seafloor dwellers: crustaceans, mollusks, and other fish.

To accommodate this crunchy and well-armored diet, the bowmouth guitarfish’s teeth are modified into wavy bands of flat, blunt crushing plates.
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deepgreenravine @deepgreenravine.bsky.social · 04/05/2025
my students are KILLING IT YOU GUYS
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Helen Whistberry @whistberry.northsky.social · 01/05/2025
Fun little experiment in style for the first day of #MothMay. My take on a mint moth, which I had not heard of before, but have striking colors!
Art piece of a digital painting of a mint moth which has burgundy wings with gold highlights and black and gold on the under wings. Drawn in  a symmetrical style, it is perched on almost abstract purple flowers with green leaves. Everything is drawn with shapes with black in between to emphasize pattern and form while being in no way realistic.
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deepgreenravine @deepgreenravine.bsky.social · 29/04/2025
Remember when I said I needed to draw more newts? This marbled newt (Triturus marmoratus) is small, but now I have the itch. I definitely need to add more amphibians to my repertoire! This drawing was made with watercolor and colored pencil.
This is a small illustration of a marbled newt. It is a lizard like amphibian, green in color with black spots and bumps of various sizes and a vivid orange stripe along its back. #sciart
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Patrick Lynch @patrlynch1.bsky.social · 29/04/2025
1/2 Great White Shark and Blue Shark. From my book "A Field Guide to Cape Cod," Yale University Press. a.co/d/eK4A0sd 🧪🌿🌎 #sciart #wildlife #scicomm #sciviz #wildlifeart #illustration #scientificillustration #natureart #visualscicomm #sciviz #scicomm #sharks #CACO #CapeCod
Side view illustrations of a Great White Shark and a Blue Shark.
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deepgreenravine @deepgreenravine.bsky.social · 26/04/2025
#invertefest
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Helen Whistberry @whistberry.northsky.social · 22/04/2025
I don't know how to express this in a way that makes sense but my art improved by leaps and bounds once I realized it is less about translating exactly what you see onto paper than it is about creating an illusion in the viewer's eye of what you are seeing (and there are tricks, just like in magic.)
Art piece of a digital painting of a tan and brown wren perched on the end of a gray stick among red poppies and green grass.
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Dr Robert Bohan @robertbohan.bsky.social · 21/04/2025
Art.
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deepgreenravine @deepgreenravine.bsky.social · 08/04/2025
Colorado hydrological map / graphite and digital / 2025 Here it is, folks - my first map is finished (for now)! This is a pretty comprehensive look at the various and sundry bodies of water crisscrossing my beautiful home state. This map will be part of an upcoming field guide project! Stay tuned 👀
This is a topographical map of the state of Colorado, with rivers, lakes, streams, reservoirs, and other bodies of water drawn in a deep teal blue. #sciart
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deepgreenravine @deepgreenravine.bsky.social · 19/04/2025
(reposting due to a typo) Happy #fossilfriday! Here’s an assortment of shark teeth (fossil and contemporary) from my collection, accompanied by a small plastic tiger shark. I pulled the bull shark tooth off the seafloor myself! This drawing was made with watercolor and colored pencil. #sciart
This image features an assortment of shark teeth of various sizes and shapes against a white background.This image labels all of the teeth with the species to which they belong, as follows.

Fossil: 1) tiger shark (Galeocerdo sp.) 2+3) crow shark (Squalicorax pristodontus) 4) white shark (Carcharodon planus) 5) megalodon (Otodus megalodon) 6) requiem shark (Physogaleus contortus) 7) mackerel shark (Otodus obliquus)

Contemporary: 8) mako shark (Isurus sp.) 9) bull shark (Carcharhinus leucas)
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deepgreenravine @deepgreenravine.bsky.social · 22/04/2025
i am not exaggerating when i tell you that i think abt this triumph of #sciart at least once a week.
This is a simple black and white drawing of a friendly looking rat wearing an undergarment that looks extremely itchy. The caption reads: “Fig. 1. The underpant worn by the rat.”
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Yuki Maehara Art 🇯🇵 @yukimaeharaart.bsky.social · 22/04/2025
My Sunset Paintings #Sky #Sunset #Painting #Art #Artwork #OriginalArt #FineArt #Landscape
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Francine Fox @francinefox.bsky.social · 22/04/2025
Today’s labors on the snake! Check out my last post to see the progress. It’s back to teaching tomorrow, but the semester will be over in a few weeks and maybe I’ll have more painting time. #watercolor #candy #snakes #wildlifeart #eden #apples #reptiles #wip #painting #surrealart #realism #red
Close up of a red snake and candy apple watercolor.
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inzaenity (COMMS OPEN!) @psalidodont.bsky.social · 22/04/2025
paleozoic menagerie #paleoart #prehistoric #art #aquatic
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Animal Aspects (Art History Animalia) @animal-aspects.bsky.social · 21/04/2025
Easter eggs 😉 “ŒUFS (Eggs),” #sciart by Adolphe Millot (1857-1921) from Nouveau Larousse Illustré (1897-1904), Vol. 6, p. 473. Not just bird eggs, but also cartilaginous fish, turtles, butterflies and moths, and even a cuttlefish! commons.wikimedia.org/wiki/File:Ad...
“ŒUFS (Eggs),” illustration by Adolphe Millot (1857-1921) from _Nouveau Larousse Illustré_ [1897-1904], vol. 6, p. 473. A symmetrically organized collection of various eggs, mostly birds but also with examples of cartilaginous fish, turtles, butterflies & moths, and cuttlefish.
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Raven Amos (Spoopy Edition)🎨🐦‍⬛ @alaskanime.bsky.social · 19/04/2025
#PaleoArtist #PaleoArt Everyone deserves a chance to see and experience your wonderful works! The fact it bumps you up in search to add alt text to your images is just gravy on top - here’s a fellow scientist w/low vision breaking it down for you (with helpful links and tools)
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Lauren @tinylongwing.bsky.social · 19/04/2025
I'm delighted to be able to share my latest artwork for the @songbirding.com podcast and audiobook series! Singing female American Redstart, because female birds definitely do sing and we're finally starting to pay attention. 🎨🪶 #SciArt #BirdArt 🧪
Illustration of a singing female American Redstart on a bright sunny spring day. Her head is tipped back, beak open, while she is perched on a mottled brown branch. She is overall grayish on the body but has a patch of bright yellow at the side of the breast, and a black and yellow tail. Behind her are pale pastel well-lit dogwood flowers and soft green leaves.
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deepgreenravine @deepgreenravine.bsky.social · 19/04/2025
(reposting due to a typo) Happy #fossilfriday! Here’s an assortment of shark teeth (fossil and contemporary) from my collection, accompanied by a small plastic tiger shark. I pulled the bull shark tooth off the seafloor myself! This drawing was made with watercolor and colored pencil. #sciart
This image features an assortment of shark teeth of various sizes and shapes against a white background.This image labels all of the teeth with the species to which they belong, as follows.

Fossil: 1) tiger shark (Galeocerdo sp.) 2+3) crow shark (Squalicorax pristodontus) 4) white shark (Carcharodon planus) 5) megalodon (Otodus megalodon) 6) requiem shark (Physogaleus contortus) 7) mackerel shark (Otodus obliquus)

Contemporary: 8) mako shark (Isurus sp.) 9) bull shark (Carcharhinus leucas)
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Glendon Mellow @flyingtrilobite.com · 19/04/2025
Sharing with the #SciArt Feed:
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H. Pettijohn @punkpaleo.bsky.social · 18/04/2025
Happy #FossilFriday, check out these Lissodus teeth from the Substation Quarry! An array of blunt teeth would have helped these little sharks crush up crunchy crustaceans as they swam through a grand, ancient lake. These teeth almost certainly represent a new species! (1/2) #paleontology
A light tan Lissodus tooth embedded in green-gray mudstone. The tooth has little ridges on its surface that radiate from the tooth's top center.A light tan Lissodus tooth embedded in a green halo in crumbly brown mudstone. The tooth has deep ridges all along its surface. Photo credit: Hunter Carter.A dark brown Lissodus tooth embedded in a green halo in brown mudstone. The tooth has a tiny point near its center.A tan Lissodus tooth embedded in mottled brown and green mudstone. The tooth's surface is largely smooth.
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franz @franzanth.bsky.social · 18/04/2025
There was no one that you wanted more
nudibranch illustration. a chunky beige slug with yellowish outgrowths all over its body that end in blue tips. corner text says Bonisa nakaza, @franzanth.
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Patrick Lynch @patrlynch1.bsky.social · 09/04/2025
Green Heron (Butorides virescens), done for a new book project on Stream ecology. 🧪🌿🌎 #sciart #wildlife #scicomm #sciviz #wildlifeart #illustration #scientificillustration #natureart #visualscicomm #sciviz #scicomm #birds #herons
Color illustration of a perched Green Heron.
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Lindsay Lindhult, PhD | Science Illustrator & Arthropod Artist @lindzeamays.bsky.social · 08/04/2025
😱 Maggots in your blueberries? Theres a wasp for that! Meet Ganaspis kimorum, a tiny parasitoid wasp and fruit superhero! G. kimorum is a bio control agent of the spotted wing Drosophila, a problematic fruit pest in the US. For Rutgers entomologist Cesar Rodriguez-Saona. Lindzeamays.com 🐡🕷️🎨🫐🧪
Digital painting of parasitoid wasp, Ganaspis kimorum.
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deepgreenravine @deepgreenravine.bsky.social · 08/04/2025
oh man i gotta update my website
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deepgreenravine @deepgreenravine.bsky.social · 08/04/2025
Colorado hydrological map / graphite and digital / 2025 Here it is, folks - my first map is finished (for now)! This is a pretty comprehensive look at the various and sundry bodies of water crisscrossing my beautiful home state. This map will be part of an upcoming field guide project! Stay tuned 👀
This is a topographical map of the state of Colorado, with rivers, lakes, streams, reservoirs, and other bodies of water drawn in a deep teal blue. #sciart
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deepgreenravine @deepgreenravine.bsky.social · 31/03/2025
Happy #transdayofvisibility! I love being agender, and I love my trans and gnc comrades - more than anyone could ever hate us.
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deepgreenravine @deepgreenravine.bsky.social · 30/03/2025
map update! more tributaries and more of CO’s larger and most recognizable waterways.
This is a photo of a computer screen. A map of Colorado’s rivers, streams, and lakes can be seen in progress in Photoshop. The map is topographical and hand drawn in graphite; the waterways are being added digitally in a deep greenish blue. #sciart
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stellaluna-06.bsky.social @stellaluna-06.bsky.social · 24/03/2025
Madagascar Sunset moth . #watercolor, metallic ink, India ink. #sciart #artyear
A rainbow hued moth with a graphic black pattern and a white outline on the edges of its wings.
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Patrick Lynch @patrlynch1.bsky.social · 24/03/2025
Song Sparrow, inspired by Henry Beston's "The Outermost House." From my book "A Field Guide to Cape Cod," Yale Univ. Press. a.co/d/eK4A0sd #sciart 🧪🌿🌎 #wildlife #scicomm #sciviz #wildlifeart #illustration #scientificillustration #natureart #visualscicomm #sciviz #scicomm #birds
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Tanya Fendler @scifendler.bsky.social · 24/03/2025
A sketched an emerald shiner for this week's #FishSketchSunday. It's the most common shiner we catch during LTEF on the Ohio River.
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deepgreenravine @deepgreenravine.bsky.social · 24/03/2025
i’m so truly uninterested in hearing defenses of ai “”art”” at this point. it’s intellectual theft. it’s creative laziness. it’s environmentally destructive. there are no shortcuts in creation. make it yourself. don’t scrape pieces by people who bothered to put in the work and hone their craft
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deepgreenravine @deepgreenravine.bsky.social · 23/03/2025
Map progress! I’m currently digitally adding CO’s many beautiful rivers, streams, creeks, seeps, lakes, reservoirs, and other various and sundry bodies of water to this map of our topography. This is the first map I’ve ever made, and I’m genuinely loving the process!
This is a photo of a computer screen. Photoshop is open, displaying a graphite topographic map. Waterways are being added digitally in a teal blue color. #sciart
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Thierry St-Laurent Dion @tstld.bsky.social · 18/03/2025
Smoll details... #art #birds #sciart #wildlife #traditional
Drawing of a sparrow head with charcoal pencils on toned paper.
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Jay 🏞️🔜 Howloween @telekitnetic.bsky.social · 19/03/2025
🔥🐾 there is no emoji for a hyena #formline #telekitneticart
A formline design of a hyena. The hyena is walking, with one back leg and one front leg raised, and it's back is arched forward, with a mane on it. It's head is tilted downward. The whole piece is coloured a near black with maroon and yellow-orange highlights, and the background is a solid bright orange.
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deepgreenravine @deepgreenravine.bsky.social · 19/03/2025
anyways! i reposted this not so long ago but i’m proud to announce that the star of this piece has successfully survived the winter. i dug her up a couple weeks ago and her color is back! shaping will come soon.
This is an image of a small Juniper procumbens #bonsai sitting on a brick ledge, aglow and basking in full sun.
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deepgreenravine @deepgreenravine.bsky.social · 19/03/2025
is anyone else genuinely losing their absolute mind due to *gestures vaguely* all this? i’m still here and still cooking on all my projects but admittedly having trouble keeping yall posted abt them. i seem to be entering hermit mode.
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