Jessica Mark Welch
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jmarkwelch.bsky.social
Jessica Mark Welch
@jmarkwelch.bsky.social
510 followers 960 following 33 posts
Microbial ecologist at the Forsyth Institute, adjunct at the Marine Biological Laboratory. Favorite hobby: taking pictures of goo.
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jmarkwelch.bsky.social
We're snailposting, post your snails
A large snail clinging upside down to a branch in El Yunque, Puerto Rico. Its long cream-colored body is glommed on to the branch like you wouldn't believe. A large snail clinging to a branch in El Yunque rainforest, Puerto Rico. Its shell is flat and grey and streaked with green algae.
November 10, 2025 at 2:30 AM
jmarkwelch.bsky.social
#CapeCod lobsters, sharks, and humans say #NoKings! At least 1000 people rallied today in little Falmouth, Massachusetts.
A large crowd stands on the town green in Falmouth, Massachusetts, on Cape Cod, with signs saying "No Kings" and a rainbow banner saying "Everyone Is Welcome Here". Among the crowd are a large inflatable shark and a large inflatable lobster. The sky is blue, the steeple of a church rises in the background, and American flags are flying.
October 19, 2025 at 1:15 AM
jmarkwelch.bsky.social
#NoKings #CapeCod
People at a rally wearing yellow shirts and holding signs that say "No Kings" and "This is not a left or right moment, it's a right or wrong moment"
October 18, 2025 at 7:58 PM
jmarkwelch.bsky.social
Lobster and shark say "No Kings!"
People wearing large inflatable shark and lobster costumes next to signs saying "No Kings" and a rainbow banner saying "Everyone is Welcome Here". They are standing on the town green behind a white fence in Falmouth, Massachusetts, and there is a church with a tall steeple in the background.
October 18, 2025 at 7:55 PM
jmarkwelch.bsky.social
No Kings in Falmouth, Massachusetts!
A large group of people on a New England town green in Falmouth, Massachusetts, with the white steeple of a church in the background. The American flag is flying and signs say "No Kings" and "Indivisible Falmouth".
October 18, 2025 at 7:48 PM
jmarkwelch.bsky.social
The @karenattiah.bsky.social posts were thoughtful and entirely appropriate. Farewell, @washingtonpost.com, I'll see you again when you remember what journalism is.
September 17, 2025 at 2:10 AM
jmarkwelch.bsky.social
A great turnout on the town green in tiny Falmouth, Massachusetts for #NoKings Day!
A large crowd of people standing behind a low white fence on a New England town green, holding signs that say "No Kings". A purple banner in the front with rainbow-colored letters spells "PEACE" using letters from the words hoPe, lovE, equAlity, inClusion, and kindnEss.
June 14, 2025 at 7:37 PM
jmarkwelch.bsky.social
Great turnout in Woods Hole, Massachusetts to stand up for science! #StandUpForScience #March7Science #StandUpForScience2025
A large crowd gathers in Waterfront Park, Woods Hole, Massachusetts with signs supporting science!
March 7, 2025 at 8:52 PM
jmarkwelch.bsky.social
I nominate Corynebacterium matruchotii! Organizer of dental plaque, holder of the speed record for elongation, capable of shattering into a dozen daughter cells simultaneously. @socialmicrobes.bsky.social @adaforsyth.bsky.social doi.org/10.1073/pnas... doi.org/10.1073/pnas...
A photomicrograph of dental plaque bacteria showing two large clusters of filaments of the bacterium Corynebacterium matruchotii, colored magenta, separated by "corncob" structures made up of rows of Streptococcus bacteria, colored green. Photo by Jessica Mark Welch, more information at https://doi.org/10.1073/pnas.1522149113
January 16, 2025 at 8:19 PM
jmarkwelch.bsky.social
Here are some dental plaque bacteria pretending to be a wreath. Happy holidays!
A photomicrograph of bacteria from dental plaque, in which streptococci form a bright green ring shaped like a wreath, and other bacteria shown in red and blue look like decorations and a red bow at the top. Overlaid text says "Wishing you and your microbes a joyful holiday!" For more information, see https://doi.org/10.1073/pnas.1522149113
December 26, 2024 at 8:18 PM
jmarkwelch.bsky.social
Post a picture you took (no description) to bring some zen to the timeline
A full moon rises in a bluish-purple sky over the seashore, reflecting in the water. Falmouth, Massachusetts
November 17, 2024 at 1:34 AM