Space capsule bobbing on surface of the ocean with five floatation devices that look like they have maple leaves or some botanical motif as part of their structure.

Personally, I kind of like the stylized maple leaf motifs on the floats. #canada

Ontario. Thinking Hudson and James bays plus the Great Lakes-St Lawrence River system.
Or PEI.

‘The way we love them in life is the way we love them in death’: a Gullah Geechee community fights for their cemetery In a win for the Gullah Geechee people on St Helena Island in South Carolina, access to a long-used cemetery has been restored

I have fond memories of this community. I did my stateside Peace Corps training at Penn Center on the island, long before it was declared a national monument. I did a homestay with a nearby family. It's a very special place.

www.theguardian.com/news/2026/fe...

World Wetlands Day 2026 YouTube video by The Convention on Wetlands

Happy #WorldWetlandsDay!

Traditional knowledge has long guided the sustainable use of wetlands. As the Convention on Wetlands marks 55 years, #WorldWetlandsDay2026 calls on us to protect wetlands and honour cultural heritage.

www.youtube.com/watch?v=S_Mc...

Image showing a family with a figure in the centre with wings and floral designs around her head and on her dress. Text says Free Them All

Free Them All!

The threat of a Line 5 oil spill remains, even in the harsh winter months. It's a good reminder about why we need to #ShutDownLine5.

(Boston Whaler Challenger; nice boat…)

Sunrise through snow squall clouds over snow carpeted ground.

Good morning to a low sun rise today from Sault Ste Marie, Ontario.

ICYMI: Opening brief against Line 5 filed in the Michigan Supreme Court

www.wlns.com/top-stories/...

Special section of Journal of Great Lakes Research on Connecting Waters in the #GreatLakes. Open Access: includes a brief historical review of past efforts to focus on these critical areas and Summary of the 15 manuscripts that compose the Section. 🧪
doi.org/10.1016/j.jg...

Australia’s unprecedented toxic algal bloom has a surprise culprit A relatively unknown species is producing a notorious neurotoxin, devastating sea life

Australia’s unprecedented toxic algal bloom has a surprise culprit | Science | AAAS www.science.org/content/arti... 🧪

Michael Twiss - Great Lakes Watermark Michael Twiss, who has served on the IJC’s Great Lakes Science Advisory Board and its Research Coordination Committee since 2014. Twiss is a professor of limnology,…

Here’s my story of the Edmund Fitzgerald. I was living in northern Ontario, in grade 4, and had a handme down radio…

vimeo.com/180232420

New infrastructure could help wildlife traverse a corridor that spans from Ontario to the ADKs As the Ontario Ministry of Transportation plans to expand Highway 401, the A2A Collaborative is proposing new wildlife over and underpasses to help animals migrate.

An excellent piece on the A2A (Adirondack to Algonquin) biological corridor and the need for wildlife passage structures over some major highways. 🦤🌎

Scientists no Longer Find Twitter Professionally Useful, and have Switched to Bluesky Synopsis. Social media has become widely used by the scientific community for a variety of professional uses, including networking and public outreach. For

WOW! Our survey of scientists who stopped using Twitter and started using Bluesky is now the #1 most-shared on social media article in the history of the journal Integrative and Comparative Biology! Thanks for reading it, everyone! @sicbjournals.bsky.social

doi.org/10.1093/icb/... 🧪

Crude oil on cool surface water that spreads but is still cohesive.

It’s happening again. Now with much cooler weather this experiment will compare effects of a surface oil spill on shallow wetlands during summer (warming) or autumn (cooling) conditions.

Ffossils!

Opinion: Let’s both celebrate – and worry about – our Great Lakes on World Lake Day Canada’s freshwater benefits us greatly - and we need to return the favour

“We need to celebrate World Lake Day by acknowledging the benefits we derive from lakes, and then by returning the favour by taking action to ensure that our lakes remain healthy”

John Smol, @sjcfishy.bsky.social & @sapnasharma.bsky.social reflect on #WorldLakeDay: bit.ly/45VwrGW

You are invited to submit a session to the 2026 Joint Aquatic Conference of the @iaglr.bsky.social and @Society of Canadian Aquatic Sciences (SCAS-SCSA), and hosted by @experimentallakes.bsky.social !!!

Check out the call for sessions at: iaglr.org/iaglr-scas26... - Deadline: September 19.

I’m watching a live stream

At the American Theater in Canton NY.
Small acts of resistance are resistance, too.

Thriving Antarctic Ecosystem Revealed by a Departing Iceberg - Eos A quick-calving iceberg gave scientists a rare glimpse into what hides beneath Antarctic ice.

Underneath the ice, this ecosystem was thriving.

eos.org/articles/thr...

Read more in our July issue, out now: bit.ly/Eos-Jul2025

From friends, at a water festival in Lyon, France.

Beloit, WI revitalized its waterfront and chose this way to celebrate it: by bringing to life Georges Seurat's "A Sunday Afternoon on the Island of La Grande Jatte."

Snowfall on mountains with steam rising off roadside lake since air temperature (2C) much cooler than surface water temp. This is the summer solstice, beginning of summer in the northern hemisphere.

Happy Summer #Solstice 2025 - today on the TransCanada Highway outside of Banff, Alberta. Wet snow today - tomorrow daylight period gets shorter…..🧪

Light crude added to an experimental chamber containing Great Lakes water.

Technician adding crude oil to aquatic experiment.

Setting up 24 x 1,400-L tanks contains St Marys River water, sediment and plants. Seen is high level light crude oil addition (time zero). Observations of biota (eDNA, phytoplankton, zooplankton, benthic inverts, and fish behavior) to follow. Funded by NRCan - MPRI project @algomau.bsky.social

If you need a breather from all this bullshit, here's a photo of Earth.

From Saturn.

We're that slightly brighter star at centre right.

Looking forward to tomorrow’s jump into Lake Ontario for Great Lakes Day celebration. The Great Lakes St Lawrence River watershed is an ecosystem of Biinaagami waters. We share with millions, from many nations, this life giving natural wonder. @swimdrinkfish ⁦‪@CanGeo

Study of invasive mussels finds PFAS is nearly everywhere in the Great Lakes | Bridge Michigan A recent report that PFAS contamination is widespread in Great Lakes mussels give a clearer picture of where the chemicals are concentrated.

NOAA's National Mussel Watch Program - which has used invasive zebra + quagga mussels to track contaminants in the #GreatLakes since 1992 - finds that PFAS are ubiquitous in the lakes, with mussels in Lake Michigan having the highest average PFAS concentrations www.bridgemi.com/michigan-env...

My first Science feed contribution. Really enjoyed the Sci-Comm session at #IAGLR25! 🧪

Hello Erik, I’m a Great Lakes limnologist looking to respectfully contribute to the Science feed. My ORCID ID is
0000-0003-1042-917X.
- Michael Twiss, PhD