Drawing of three people operating observation equipment while looking out to the sunny coastline. There are three ships in the ocean and in the sky are a satellite and a weather balloon. On the top left is the logo of the World Meteorological Organization and the text reads: Observing today, protecting tomorrow. World Meteorological Day. 23 March 2026.

#WorldMetDay 🔍Observing Today 🛡️Protecting Tomorrow

TRICUSO is supporting efforts of @wmo-global.bsky.social and its #G3W by expanding #carbon #observation in the under observed #SouthernOcean

Shout-out to all WMO members for their service to science and wider society!

@horizoneu.bsky.social #REA

World’s largest krill harvester at centre of row over ‘blue tick’ sustainability label Aker Qrill is facing criticism of its fishery management amid calls by environmentalists for curbs on Antarctic fishing of the keystone species

Krill is a keystone species in the ocean, www.theguardian.com/environment/... #akerqrill #antarctic #antarctica #asoc #bluetick #ccamlr #china #crustacean #davidattenborough #krill #marinestewardshipcouncil #msc #norway #ocean #russia #southernocean

But today the #SouthernOcean is changing rapidly, industrial krill fishing is intensifying, and political deadlock is stalling protection.

Swipe to understand why this matters.

From Antarctica, we are witnessing the consequences firsthand. 🌊🐋🐧

Satellite images show how Antarctica’s vanishing sea ice is changing the food chain With the loss of sea ice, tiny filter feeders known as ‘salps’ can thrive, while shrimp-like krill lose out.

“Around ten years ago, everything changed.”

New satellite analysis shows Antarctic sea-ice loss has increased #phytoplankton across 70% of the #SouthernOcean. Good news? Not quite.

Discover the 'winners' and 'losers':
theconversation.com/satellite-im...

Session 1.3 Southern Ocean carbon cycle - tracking changes in a warming world hosted by Kim Maria Mächler 🦑🐳🌏
#ICYMARE2026Bremen #carboncycle #southernocean #oceanwarming #climatechange #earlycareerconference #oceandecade

Sources of dFe and pFe and biogeochemical processes associated with the ‘meltwater pump’ vertical buoyancy-driven circulation in the Dotson Ice Shelf cavity are indicated, showing upper and lower mCDW layers and pathways (dark blue), ice shelf meltwater that includes both dFe from the ice melt itself and interactions with ice-entombed particles and glacial till (light blue), and discharge of subglacial meltwater (yellow). Dissolved and particulate Fe indicated with circles and squares, respectively. Also shown are entrainment and mixing of subglacial and ice shelf meltwaters with inflowing upper mCDW to form a buoyant plume, particulate Fe sources and settling, and relevant measurements of the concentration and isotopic composition of dissolved Fe. Note symbol density is not in strict proportion to relative dissolved and particulate Fe concentrations. Pie chart shows the calculated contribution of dFe from ice shelf meltwater, subglacial discharge, mCDW, and sedimentary sources, at the Dotson Ice Shelf outflow station.

[8/8] Cette étude montre que la fonte agit surtout comme une pompe physique. Elle favorise la remontée vers la surface d’un fer profond déjà enrichi. Comprendre la circulation océanique devient donc central pour anticiper l’évolution des écosystèmes antarctiques. #geography #ironcycle #SouthernOcean

Iron supply to the Amundsen Sea, Antarctica is dominated by circumpolar deepwater and continental subglacial sources - Communications Earth & Environment Meltwater generated within the Dotson Ice Shelf cavity supplies little dissolved iron. Most meltwater-derived iron found in water flowing out of the cavity comes from subglacial discharge, based on ir...

[1/8] Des océanographes (ARTEMIS) publient une étude sur la barrière de Dotson, en mer d’Amundsen. Leur travail cherche à comprendre l’origine du fer qui alimente le phytoplancton de l’océan Austral, région essentielle dans la régulation du climat mondial. #geography #ironcycle #SouthernOcean

Two humpback whales swim gracefully underwater in a deep blue ocean. One whale is closer to the foreground, displaying a large, textured body, while the second is further in the background, partially obscured by water. Sunlight filters through the surface, highlighting the whales.

🐋 Southern right whales are reproducing less often.

Climate-driven changes in #Antarctic sea ice and food supply are linked to longer calving intervals, signalling emerging stress in #SouthernOcean ecosystems. https://www.nature.com/articles/s41598-026-36897-1

Fig. 3: a–c from the ensemble mean of six pCO2 products and nine CMIP6 ESMs for the present climate (blue line) and the end of the century (2080–2099, orange). d–f Net changes in the projected future climate (note the change of scale). The first, second, and third columns depict the austral summer (DJF), austral winter (JJA) averages, and the annual mean, respectively. The vertical gray lines denote the frontal positions, the solid line the Polar Front, and dotted the Subtropical Front. The shading in all figures shows the uncertainty; inter-model one standard deviation.

Precious Mongwe et al* project geographical and seasonal shifts of the Southern Ocean carbon sink under high emissions.

doi.org/10.1038/s432...

#SouthernOcean #carbon #sink

Luke Gregor, Jerry Tjiputra, Judith Hauck, Takamitsu Ito, Christopher Danek, Marcello Vichi, Sandy Thomalla & Pedro Monteiro

—𝙰𝚍𝚎𝚕𝚒𝚎…
.
#antarctica #photography #lindbladexpeditions #sonyalpha #penguin #nationalgeographic #travelgrams #lonelyplanet #visualscollective #southernocean

Shark caught on camera for first time in Antarctica’s deep waters | CNN An ungainly barrel of a shark cruising languidly over a barren seabed far too deep for the sun’s rays to illuminate was an unexpected sight.

Nature keeps surprising scientists. edition.cnn.com/2026/02/18/w... #BlueSky #ScienceSky #Antarctic #DeepSeaFauna #SouthernOcean

The Southern Ocean is not a sacrifice zone. 🌊🐋

Source : seashepherdglobal.org/latest-news/...

#KrillCrisis #Antarctica #SouthernOcean #MaritimeOSINT #ProtectTheOceans

Figure 4: The air-sea CO₂ flux by months of year. Color scale is blue to yellow from past to present, 2004 to 2021. The orange solid line indicates the average value for each month. Negative values indicate ocean uptake of CO₂.

Xiang Yang et al.* look at drivers of air-sea CO₂ fluxes in the Subantarctic zone south of Australia.

doi.org/10.1029/2023...

#ocean #flux #co2 #SouthernOcean

*Cathryn A. Wynn-Edwards, Peter G. Strutton, Elizabeth H. Shadwick

🐋Southern right whales are powerful indicators of #climatechange. Their #reproductive success depends on reliable food supply in the #SouthernOcean making them highly sensitive to climate-driven shifts in prey availability.

Invitation for the Southern Ocean Session at the Ocean Sciences Meeting in Glasgow, Scotland. The Oral Session is taking place on Tuesday 24 February 2026, from 8:30 to 10:00 (GMT) at Forth.

🌊 Coming up at #OSM26

#Oral #Session HE21B - The #SouthernOcean #CarbonSink: Processes, Observations, and Change

💡More information & registration: agu.confex.com/agu/osm26/me...

@horizoneu.bsky.social #REA

Ice shield in the Southern Ocean

Antarctic ice melt 🧊🌍 changed global ocean circulation. Ice-sheet melt temporarily intensified Southern Ocean stratification.
👉 tinyurl.com/rvasrrnv

#SouthernOcean #Antarctica #OceanCirculation #ClimateScience #PaleoClimate

🛰️🌬️🌊

#highlatitudedust activity yesterday in one of the southernmost dust source in the world, the mudflats at St. Sebastian bay in #TierradelFuego

Here the source is not visible but there was a clear extended dust cloud well into the #SouthernOcean

@solas-ipo.bsky.social

—𝙾𝚗𝚎 𝚘𝚏 𝚝𝚑𝚎 𝚌𝚘𝚘𝚕𝚎𝚜𝚝 𝚎𝚡𝚙𝚎𝚛𝚒𝚎𝚗𝚌𝚎𝚜 𝙸’𝚟𝚎 𝚎𝚟𝚎𝚛 𝚑𝚊𝚍, 𝚠𝚊𝚕𝚔𝚒𝚗𝚐 𝚘𝚗 𝚝𝚑𝚎 𝚂𝚘𝚞𝚝𝚑𝚎𝚛𝚗 𝙾𝚌𝚎𝚊𝚗, 𝚕𝚘𝚘𝚔𝚒𝚗𝚐 𝚋𝚊𝚌𝚔 𝚊𝚝 𝚘𝚞𝚛 𝚜𝚑𝚒𝚙…
.
#antarctica #photography #lindbladexpeditions #sonyalpha #nationalgeographic #travelgrams #lonelyplanet #visualscollective #southernocean

Extreme temperature events reshuffle the ecological landscape of the Southern Ocean - Nature Communications Satellite records reveal that Southern Ocean phytoplankton responds in contrasting ways to marine heatwaves and cold spells. These opposing impacts vary sharply by region, exposing distinct ecological...

New study uses #satellite records and shows that #SouthernOcean #phytoplankton responds in contrasting ways to marine #heatwaves and #cold spells. The impacts vary sharply by region, exposing distinct #ecological sensitivity to #climate -driven extremes. www.nature.com/articles/s41...

—𝙴𝚟𝚎𝚛𝚢𝚋𝚘𝚍𝚢 𝚜𝚑𝚘𝚠𝚜 𝚞𝚙 𝚏𝚘𝚛 𝚊 𝚐𝚘𝚘𝚍 𝚒𝚌𝚎 𝚋𝚛𝚎𝚊𝚔𝚎𝚛…
.
#antarctica #sonyalpha #photography #travelgrams #lonelyplanet #visualscollective #southernocean #lindbladexpeditions #nationalgeographic

Thumbnail for the first TRICUSO project video. Episode 1: Expanding the capacity of observation in the Southern Ocean. In the background is the beautiful scenery of the floating ice on the Southern Ocean, snowy mountains and a blue sky.

📽️TRICUSO’s first #projectvideo! Featuring the beautiful #SouthernOcean, interviews with our consortium #scientists and our ambitions to innovate #sensor technology and engage #citizenscience platforms.

Special thanks to #60South & #TheOceanRace

🔗Link in comments

@horizoneu.bsky.social #REA

—𝚁𝚘𝚞𝚐𝚑 𝚁𝚘𝚊𝚍…
.
#antarctica #sonyalpha #photography #penguin #travelgrams #lonelyplanet #visualscollective #southernocean #lindbladexpeditions #nationalgeographic

—𝙱𝚎𝚛𝚐𝚜 𝚊𝚗𝚍 𝙱𝚛𝚊𝚜𝚑…
.
#antarctica #sonyalpha #photography #iceberg #travelgrams #lonelyplanet #visualscollective #southernocean #lindbladexpeditions #nationalgeographic

ABC news snippet All-time temperature records broken Monday + 49.5C at Ceduna, SA + 48.6C at Wudinna, SA * 47.3C at Trangie, NSW + 461C at Dubbo, NSW Tuesday * 49.6C Renmark, SA * 491C at Fowlers Gap, NSW + 48.9C at Walepup, now the hottest day ever recorded in Vic + 48.9C at Hopetoun, the equal hottest day recorded in Vic * 48.4C Mildura, Vic + 48.3C Lameroo, SA * 48.3C Ivanhoe, NSW * 48.2C Loxton, SA * 481C Longerenong, Vic * 45.2C Point Cook, Vic * 441C Melbourne Airport

👀 jeez and #Ceduna is right by the #southernocean and not even that helps 😬

#heatwave #australia

French expedition sets sail to preserve Antarctica's 'invisible wealth' French explorer Jean-Louis Etienne and his crew of eight scientists this week began an expedition to the remote waters of Antarctica, where they hope to gather a wealth of data to demonstrate the benefits…

French expedition sets sail to preserve Antarctica's 'invisible wealth' - RFI

www.rfi.fr/en/environment/20260124-...

#Antarctica #CCAMLR #PolarExploration #RossSea #SouthernOcean #Krill

(1/4) 🐳 Kicking off our series on the baleen (filter-feeding) #whales of the #SouthernOcean is the largest of them all: the blue whale. In fact, it’s the biggest animal on Earth!

Original post on swiss.social

We, scientists, activists, and sailors from the #UnderThePole – #MaliziaExplorer #expedition, joined by citizens across the globe, call on our governments to do everything possible to protect #Antarctica and the #SouthernOcean. This must begin with the establishment of a #MarineProtectedArea […]

Job opportunity in our 2026 postdoc cohort. Apply now!
#jobsinscience #postdocposition #postdoc #southernocean

A high angle shot of a rocky cliff face on the left, with powerful white surf breaking against the rocks below. A flock of small sea birds is scattered across the foamy blue water.

The wild rhythm of the sea.

Elliston, South Australia.

© 𝓐𝓵𝓵 𝓡𝓲𝓰𝓱𝓽𝓼 𝓡𝓮𝓼𝓮𝓻𝓿𝓮𝓭 𝓫𝔂 𝓚𝓮𝓿 𝓟𝓮𝓲𝓻𝓬𝓮.

#photo #photography #australia #southaustralia #SouthernOcean #WildCoast #SeaBirds #OceanPower #CoastalPhotography

Hard to make it more clear.
The #SouthernOcean needs krill the way we need bees.

Bees are protected because we understand their value.
Krill are still being industrially harvested because most people do not.

Protect the foundation before everything collapses. Protect Krill, protect Antarctica.