Mark Rosenstein
maractwin.bsky.social
Mark Rosenstein
@maractwin.bsky.social
Don’t ask why we have two dozen stuffed lobsters. Of course I have a squid and assorted fishes.
December 8, 2025 at 2:18 AM
I won’t repost them all here, but many underwater photos from my recent Fiji trip are on my Flickr www.flickr.com/photos/14233...
Fiji 2025
Explore this photo album by Mark Rosenstein on Flickr!
www.flickr.com
October 8, 2025 at 11:26 PM
Happy #WorldOctopusDay! To celebrate: a stunning Day Octopus (Octopus cyanea) doing its thing.

📷 maractwin on iNaturalist
📍 Fiji
🔗: www.inaturalist.org/observations...
#ObservationOfTheDay
October 8, 2025 at 11:20 PM
The summary of our trip has been posted.

www.naia.com.fj/blog/unknown...
Unknown Sites & Usual Suspects
www.naia.com.fj
September 27, 2025 at 1:33 AM
Just got off the Nai’a after 2 weeks of scuba diving in Fiji. Had a great time.
September 26, 2025 at 9:36 PM
On our way to Provincetown for the car show. Caravaning with a few friends.
September 4, 2025 at 3:04 PM
At the Watertown Wheels car show… with Isabella, our ‘57 Imperial.
August 3, 2025 at 3:15 PM
Best moth last night was this Blinded Sphinx.
July 20, 2025 at 4:34 PM
I haven’t been doing much mothing lately, but brought my gear with me to Gott’s Island since it’s moth week. Here’s a Lettered Habrosyne I saw last night.
July 19, 2025 at 8:50 PM
Coastal Maine is beautiful.
July 19, 2025 at 1:42 AM
At the osCARs with @jodyrenouf.bsky.social
June 29, 2025 at 12:53 AM
Chicago skyline from the lake. It’s finally cooled off.
June 28, 2025 at 1:59 AM
Reposted by Mark Rosenstein
With @maractwin.bsky.social at Schaefer’s Auto Art in Erie, PA
June 24, 2025 at 2:43 PM
Where do I plug this thing in? The Lucid is so much easier to charge…
June 23, 2025 at 10:41 PM
Isabella looks good in front of a diner. On our way to Chicago…
June 23, 2025 at 5:34 PM
We brought Isabella to Bedford Cars & Coffee. It’s the only vintage car here among the modern performance cars.
June 22, 2025 at 1:44 PM
Reposted by Mark Rosenstein
Can you haul a brass band on bikes to accompany your #BikeBus to school? For the third time, yes.

Big thanks to all our volunteers and musicians!
June 20, 2025 at 2:50 PM
Reposted by Mark Rosenstein
ONE WEEK TIL HONK BUS www.instagram.com/reel/C7POOGW...
June 13, 2025 at 4:39 PM
Today I marched with School of Honk in the Juneteenth parade in Cambridge.
June 19, 2025 at 6:39 PM
My lifers (species I saw for the first time) last week in Anilao were Japanese Surgeonfish and Marbled Snake Eel.
June 9, 2025 at 6:01 AM
One of my favorite groups of fishes are the fairy and flasher wrasses. Here are a few I saw this week in Anilao.
June 4, 2025 at 6:55 AM
It’s been pointed out that here in Anilao Philippines I am in the nudibranch capital of the world. So here are some nudis.
June 2, 2025 at 4:54 AM
Having a lovely time scuba diving in Anilao Philippines with Undersea Productions.
June 1, 2025 at 11:03 PM
Getting ready for my upcoming dive trip. Got my first ever mani-pedi.
May 26, 2025 at 4:45 PM
My first time to Quincy Quarries, on a car club cruise.
May 18, 2025 at 4:08 PM