Rochelle Constantine
@rconstantine.bsky.social
Always about the ocean, Professor, solutions focused, Aotearoa New Zealand is home
Reposted by Rochelle Constantine
IPCC Chair @jimskeaclimate.bsky.social addressed the opening of the 12th Session of @ipbes.net in Manchester today, emphasising the importance of the scientific link between @ipcc.bsky.social & IPBES, such as IPBES's participation in the upcoming IPCC Workshop on Engaging Diverse Knowledge Systems.
February 3, 2026 at 4:33 PM
IPCC Chair @jimskeaclimate.bsky.social addressed the opening of the 12th Session of @ipbes.net in Manchester today, emphasising the importance of the scientific link between @ipcc.bsky.social & IPBES, such as IPBES's participation in the upcoming IPCC Workshop on Engaging Diverse Knowledge Systems.
Biology! There’s always one. Love this 👇🏻🩵
This is like that trap-cam shot of the chihuahua hanging with the wolf pack. This is probably the most mind expanding result of the decade
And to be fair, we had a hint about this from a previous paper, but it was for a single animal and so I, like many others, dismissed it as a one-off.
"The critically endangered bowmouth guitarfish (Rhina ancylostoma) in the open ocean with an associated tuna school"
dx.doi.org/10.1007/s125...
"The critically endangered bowmouth guitarfish (Rhina ancylostoma) in the open ocean with an associated tuna school"
dx.doi.org/10.1007/s125...
February 2, 2026 at 4:28 AM
Biology! There’s always one. Love this 👇🏻🩵
Research funding decisions in these people’s hands… www.beehive.govt.nz/release/next...
www.beehive.govt.nz
January 28, 2026 at 3:37 AM
Research funding decisions in these people’s hands… www.beehive.govt.nz/release/next...
🩵 Current obsession is checking the swim4theocean @LiveOcean site to see Jono Ridler’s progress. Swimming the east coast North Is - Aotearoa New Zealand to get people thinking & talking about bottom trawl fisheries. Epic human 👊🏻🩵 🏊♂️ liveocean.org/swim4theocea...
Swim4TheOcean
One man attempting to swim 1,000 miles of treacherous coastline. To ignite New Zealanders around the race for a healthy ocean.
liveocean.org
January 26, 2026 at 3:22 AM
🩵 Current obsession is checking the swim4theocean @LiveOcean site to see Jono Ridler’s progress. Swimming the east coast North Is - Aotearoa New Zealand to get people thinking & talking about bottom trawl fisheries. Epic human 👊🏻🩵 🏊♂️ liveocean.org/swim4theocea...
Reposted by Rochelle Constantine
This week has shown (once again) that extreme weather events in a changing climate pose growing risks to Aotearoa's communities and ecosystems.
We're developing tools to prepare for extreme weather events, and we're looking for a masters student to help → www.tepunahamatatini.ac.nz/posts/master...
We're developing tools to prepare for extreme weather events, and we're looking for a masters student to help → www.tepunahamatatini.ac.nz/posts/master...
Masters scholarship on the impacts of extreme climate events
Applications are invited for a masters scholarship at the University of Canterbury on the impacts of extreme climate events for coastal systems and communities.
www.tepunahamatatini.ac.nz
January 23, 2026 at 2:03 AM
This week has shown (once again) that extreme weather events in a changing climate pose growing risks to Aotearoa's communities and ecosystems.
We're developing tools to prepare for extreme weather events, and we're looking for a masters student to help → www.tepunahamatatini.ac.nz/posts/master...
We're developing tools to prepare for extreme weather events, and we're looking for a masters student to help → www.tepunahamatatini.ac.nz/posts/master...
Reposted by Rochelle Constantine
What’s driving the decline?
The crisis isn’t just fishing — it’s invisible fishing.
Much shark & ray catch is under-reported, aggregated, or mislabeled, masking real mortality & delaying management.
What we don’t measure, we don’t manage.
@cgmull.bsky.social
@nathanpacoureau.bsky.social
The crisis isn’t just fishing — it’s invisible fishing.
Much shark & ray catch is under-reported, aggregated, or mislabeled, masking real mortality & delaying management.
What we don’t measure, we don’t manage.
@cgmull.bsky.social
@nathanpacoureau.bsky.social
January 22, 2026 at 3:35 AM
What’s driving the decline?
The crisis isn’t just fishing — it’s invisible fishing.
Much shark & ray catch is under-reported, aggregated, or mislabeled, masking real mortality & delaying management.
What we don’t measure, we don’t manage.
@cgmull.bsky.social
@nathanpacoureau.bsky.social
The crisis isn’t just fishing — it’s invisible fishing.
Much shark & ray catch is under-reported, aggregated, or mislabeled, masking real mortality & delaying management.
What we don’t measure, we don’t manage.
@cgmull.bsky.social
@nathanpacoureau.bsky.social
Reposted by Rochelle Constantine
Here are the daily color stripes for the global sea-surface temperature anomaly, up-to-date through Jan. 19, 2026.
You can see the easily spot the cooling trend in 2025, but with a coming El Nino, the future is maroon.
You can see the easily spot the cooling trend in 2025, but with a coming El Nino, the future is maroon.
January 22, 2026 at 4:23 PM
Here are the daily color stripes for the global sea-surface temperature anomaly, up-to-date through Jan. 19, 2026.
You can see the easily spot the cooling trend in 2025, but with a coming El Nino, the future is maroon.
You can see the easily spot the cooling trend in 2025, but with a coming El Nino, the future is maroon.
Reposted by Rochelle Constantine
See out thread summarizing the paper here: bsky.app/profile/nick...
New online! Bending back the curve of shark and ray biodiversity loss
Bending back the curve of shark and ray biodiversity loss
Nature Reviews Biodiversity, Published online: 22 January 2026; doi:10.1038/s44358-025-00120-2Global shark and ray populations have declined sharply, driven by expanding fisheries and inequitable gaps in catch, trade and distribution data. This Review assesses global status, highlights drivers of decline, and outlines the regulatory, market-based and conservation actions needed to reduce mortality and reverse shark and ray biodiversity loss.
dlvr.it
January 22, 2026 at 4:48 PM
See out thread summarizing the paper here: bsky.app/profile/nick...
Reposted by Rochelle Constantine
New paper out today in @natrevbiodiv.nature.com by the #GlobalSharkTrends team: Bending back the curve of shark & ray biodiversity loss;
Read the paper here: rdcu.be/eZ9n9
@sfu.ca
@sfubiosciences.bsky.social
@earth2ocean.bsky.social
Read the paper here: rdcu.be/eZ9n9
@sfu.ca
@sfubiosciences.bsky.social
@earth2ocean.bsky.social
January 22, 2026 at 3:35 AM
New paper out today in @natrevbiodiv.nature.com by the #GlobalSharkTrends team: Bending back the curve of shark & ray biodiversity loss;
Read the paper here: rdcu.be/eZ9n9
@sfu.ca
@sfubiosciences.bsky.social
@earth2ocean.bsky.social
Read the paper here: rdcu.be/eZ9n9
@sfu.ca
@sfubiosciences.bsky.social
@earth2ocean.bsky.social
Reposted by Rochelle Constantine
Your 'bonus moment of doom' for today: In other words, about 8 billion Hiroshimas worth of heating.
"Ocean heat content (OHC) increased by around 500 zettajoules – billion trillion joules – since the 1940s."
www.carbonbrief.org/state-of-the...
"Ocean heat content (OHC) increased by around 500 zettajoules – billion trillion joules – since the 1940s."
www.carbonbrief.org/state-of-the...
State of the climate: 2025 in top-three hottest years on record as ocean heat surges - Carbon Brief
The year 2025 was in the top-three warmest years on record
www.carbonbrief.org
January 14, 2026 at 4:12 PM
Your 'bonus moment of doom' for today: In other words, about 8 billion Hiroshimas worth of heating.
"Ocean heat content (OHC) increased by around 500 zettajoules – billion trillion joules – since the 1940s."
www.carbonbrief.org/state-of-the...
"Ocean heat content (OHC) increased by around 500 zettajoules – billion trillion joules – since the 1940s."
www.carbonbrief.org/state-of-the...
Reposted by Rochelle Constantine
Not just sobering, but a kick in the goolies 😖
New national climate plans have done barely anything
@unep.org’s 2025 #EmissionsGap Report warns that even if all current targets are fully implemented, global temperatures still projected to rise 2.3–2.5°C this century
www.unep.org/resources/em...
New national climate plans have done barely anything
@unep.org’s 2025 #EmissionsGap Report warns that even if all current targets are fully implemented, global temperatures still projected to rise 2.3–2.5°C this century
www.unep.org/resources/em...
Emissions Gap Report 2025
UNEP’s Emissions Gap Report 2025: Off Target finds that available new climate pledges under the Paris Agreement have only slightly lowered global temperature rise over the course of this century, leav...
www.unep.org
January 14, 2026 at 4:25 PM
Not just sobering, but a kick in the goolies 😖
New national climate plans have done barely anything
@unep.org’s 2025 #EmissionsGap Report warns that even if all current targets are fully implemented, global temperatures still projected to rise 2.3–2.5°C this century
www.unep.org/resources/em...
New national climate plans have done barely anything
@unep.org’s 2025 #EmissionsGap Report warns that even if all current targets are fully implemented, global temperatures still projected to rise 2.3–2.5°C this century
www.unep.org/resources/em...
Reposted by Rochelle Constantine
The red dot is a baby North Atlantic right whale trying to migrate up the east coast of the United states.
The blue streaks are fast moving shipping vessels entering and leaving New York City harbor.
One collision and the whale is dead.
We need *mandatory* speed limits for these vessels! 🧪🦑🌍
The blue streaks are fast moving shipping vessels entering and leaving New York City harbor.
One collision and the whale is dead.
We need *mandatory* speed limits for these vessels! 🧪🦑🌍
January 14, 2026 at 4:34 PM
The red dot is a baby North Atlantic right whale trying to migrate up the east coast of the United states.
The blue streaks are fast moving shipping vessels entering and leaving New York City harbor.
One collision and the whale is dead.
We need *mandatory* speed limits for these vessels! 🧪🦑🌍
The blue streaks are fast moving shipping vessels entering and leaving New York City harbor.
One collision and the whale is dead.
We need *mandatory* speed limits for these vessels! 🧪🦑🌍
Reposted by Rochelle Constantine
Deep-Sea Mining Watch reveals where vessels are exploring deep-sea mineral sites, helping bring accountability to one of the ocean’s last frontiers.
@paulwoods.io , Global Fishing Watch Chief Innovation Officer, highlights the role of transparency in ocean governance.
🔗 https://bit.ly/4a1Qvex
@paulwoods.io , Global Fishing Watch Chief Innovation Officer, highlights the role of transparency in ocean governance.
🔗 https://bit.ly/4a1Qvex
January 14, 2026 at 5:50 PM
Deep-Sea Mining Watch reveals where vessels are exploring deep-sea mineral sites, helping bring accountability to one of the ocean’s last frontiers.
@paulwoods.io , Global Fishing Watch Chief Innovation Officer, highlights the role of transparency in ocean governance.
🔗 https://bit.ly/4a1Qvex
@paulwoods.io , Global Fishing Watch Chief Innovation Officer, highlights the role of transparency in ocean governance.
🔗 https://bit.ly/4a1Qvex
Reposted by Rochelle Constantine
Looking forward to reading this! I'm lucky to be making a small contribution to the volume: a piece discussing the unique perspectives bio-logging has provided on blue whales' lives. Can't wait to learn from the rest of the articles as well!
COMING SOON!!!!!! Entire volume on blue whales by Whalewatcher, that I have been given the great honor of guest editing! So many amazing articles in prep already.
January 12, 2026 at 10:06 PM
Looking forward to reading this! I'm lucky to be making a small contribution to the volume: a piece discussing the unique perspectives bio-logging has provided on blue whales' lives. Can't wait to learn from the rest of the articles as well!
Reposted by Rochelle Constantine
🧪New preprint! tinyurl.com/mr7km2pv
When & why do predators share social information? Blue whales produce foraging calls when prey (krill) are abundant & dense, conditions arising from physical oceanographic forcing across temporal scales. Variation in ocean physics shapes blue whale communication!
When & why do predators share social information? Blue whales produce foraging calls when prey (krill) are abundant & dense, conditions arising from physical oceanographic forcing across temporal scales. Variation in ocean physics shapes blue whale communication!
Biophysical ecosystem variation shapes oceanic predator communication
ecoevorxiv.org
January 7, 2026 at 5:32 PM
🧪New preprint! tinyurl.com/mr7km2pv
When & why do predators share social information? Blue whales produce foraging calls when prey (krill) are abundant & dense, conditions arising from physical oceanographic forcing across temporal scales. Variation in ocean physics shapes blue whale communication!
When & why do predators share social information? Blue whales produce foraging calls when prey (krill) are abundant & dense, conditions arising from physical oceanographic forcing across temporal scales. Variation in ocean physics shapes blue whale communication!
Reposted by Rochelle Constantine
"The International Visitor Levy was introduced to help manage the impacts of ballooning tourist numbers. So why is it instead funding millions in marketing to lure even more tourists, while DOC warns conservation is about to go backwards, and towns can't afford to upgrade overflowing toilets?"
The tourist tax that’s selling New Zealand, not supporting it
The International Visitor Levy was supposed to help manage the impacts of ballooning tourist numbers. So why is it instead funding millions in tourism marketing, while DOC warns conservation risks are...
www.thepost.co.nz
January 3, 2026 at 10:06 PM
"The International Visitor Levy was introduced to help manage the impacts of ballooning tourist numbers. So why is it instead funding millions in marketing to lure even more tourists, while DOC warns conservation is about to go backwards, and towns can't afford to upgrade overflowing toilets?"
😞 Vale Emma. An ocean woman who truly made a difference. Condolences to her family & to all who were privileged to know her. 🩵 theconversation.com/emma-johnsto...
Emma Johnston was a visionary scientist, environmentalist and leader, with an abiding hope for humanity
The University of Melbourne Vice-Chancellor, who has died aged 52, was driven by a deep love of science and a desire to safeguard the planet’s future.
theconversation.com
December 30, 2025 at 6:15 AM
😞 Vale Emma. An ocean woman who truly made a difference. Condolences to her family & to all who were privileged to know her. 🩵 theconversation.com/emma-johnsto...
Reposted by Rochelle Constantine
Environmental defenders & conservationists who died in 2025
Environmental defenders & conservationists who died in 2025
I write short obituaries for people who spent their lives protecting parts of the natural world. I work on them in the margins of other responsibilities, yet they have become a constant. In 2025, I…
news.mongabay.com
December 22, 2025 at 2:13 PM
Environmental defenders & conservationists who died in 2025
Reposted by Rochelle Constantine
"Assumption of at least a moderate El Nino beginning in 2026 leads us to the projection in Fig. 5, with global temperature reaching a minimum at or above +1.4°C within several months and then rising to a record global temperature of about +1.7°C in 2027."
mailchi.mp/caa/global-t...
mailchi.mp/caa/global-t...
December 18, 2025 at 2:42 PM
"Assumption of at least a moderate El Nino beginning in 2026 leads us to the projection in Fig. 5, with global temperature reaching a minimum at or above +1.4°C within several months and then rising to a record global temperature of about +1.7°C in 2027."
mailchi.mp/caa/global-t...
mailchi.mp/caa/global-t...
Reposted by Rochelle Constantine
It looks like 2025 will end up at about 1.47°C above the 1850-1900 pre-industrial baseline, making it likely the third hottest year in the last 120,000+ years.
Meanwhile, the 3-year running average is going to end the year above 1.50°C for the first time.
Meanwhile, the 3-year running average is going to end the year above 1.50°C for the first time.
December 16, 2025 at 3:05 PM
It looks like 2025 will end up at about 1.47°C above the 1850-1900 pre-industrial baseline, making it likely the third hottest year in the last 120,000+ years.
Meanwhile, the 3-year running average is going to end the year above 1.50°C for the first time.
Meanwhile, the 3-year running average is going to end the year above 1.50°C for the first time.
Reposted by Rochelle Constantine
Since the deep-sea accounts for over half the surface of the planet and more than 90% of this world's biosphere, in a very really and quantified way, the unknowable wonders of the deep are the normal ones and us terrestrial outliers are the weird ones.
November 25, 2025 at 11:00 PM
Since the deep-sea accounts for over half the surface of the planet and more than 90% of this world's biosphere, in a very really and quantified way, the unknowable wonders of the deep are the normal ones and us terrestrial outliers are the weird ones.
Reposted by Rochelle Constantine
New episode!! 🎙️🎉
A chat w/ @pbrakes.bsky.social about animal cultures and animal conservation.
Culture was once thought to be uniquely human. No longer. We now know culture is found throughout the natural world. How does this complicate conservation?
Listen: disi.org/the-value-of...
A chat w/ @pbrakes.bsky.social about animal cultures and animal conservation.
Culture was once thought to be uniquely human. No longer. We now know culture is found throughout the natural world. How does this complicate conservation?
Listen: disi.org/the-value-of...
December 8, 2025 at 7:03 PM
New episode!! 🎙️🎉
A chat w/ @pbrakes.bsky.social about animal cultures and animal conservation.
Culture was once thought to be uniquely human. No longer. We now know culture is found throughout the natural world. How does this complicate conservation?
Listen: disi.org/the-value-of...
A chat w/ @pbrakes.bsky.social about animal cultures and animal conservation.
Culture was once thought to be uniquely human. No longer. We now know culture is found throughout the natural world. How does this complicate conservation?
Listen: disi.org/the-value-of...
Reposted by Rochelle Constantine
This graph shows the average November volume of Arctic sea-ice. As you can see, November, 2025, set a new record low for sea-ice volume.
Volume, thickness and extent are all at record lows right now for the date. The Climate 8-ball is chanting, "Ice free by twenty-fifty."
Volume, thickness and extent are all at record lows right now for the date. The Climate 8-ball is chanting, "Ice free by twenty-fifty."
December 13, 2025 at 2:36 PM
This graph shows the average November volume of Arctic sea-ice. As you can see, November, 2025, set a new record low for sea-ice volume.
Volume, thickness and extent are all at record lows right now for the date. The Climate 8-ball is chanting, "Ice free by twenty-fifty."
Volume, thickness and extent are all at record lows right now for the date. The Climate 8-ball is chanting, "Ice free by twenty-fifty."
Reposted by Rochelle Constantine
Northern bottlenose whales have struggled to rebound even decades after whaling bans.
But a population off Canada’s east coast is finally recovering after the Gully submarine canyon became a Marine Protected Area in 2004 — a rare marine conservation success.
But a population off Canada’s east coast is finally recovering after the Gully submarine canyon became a Marine Protected Area in 2004 — a rare marine conservation success.
A rare bright spot for whales: Decades of conservation pay off for endangered population in Canada
Populations of northern bottlenose whales (Hyperoodon ampullatus), playful animals that resemble large dolphins, stretch across the Atlantic Ocean, with each group of whales living year-round in a…
news.mongabay.com
December 9, 2025 at 7:18 PM
Northern bottlenose whales have struggled to rebound even decades after whaling bans.
But a population off Canada’s east coast is finally recovering after the Gully submarine canyon became a Marine Protected Area in 2004 — a rare marine conservation success.
But a population off Canada’s east coast is finally recovering after the Gully submarine canyon became a Marine Protected Area in 2004 — a rare marine conservation success.
Reposted by Rochelle Constantine
“Silence fell across the court as the death of yet another hoiho was announced. It was a potent reminder of why we are here. We want to see hoiho stand a chance of surviving,”
-- ELI’s Senior Legal Advisor Megan Cornforth-Camden.
#hoiho #penguins #conservation
-- ELI’s Senior Legal Advisor Megan Cornforth-Camden.
#hoiho #penguins #conservation
December 1, 2025 at 3:33 AM
“Silence fell across the court as the death of yet another hoiho was announced. It was a potent reminder of why we are here. We want to see hoiho stand a chance of surviving,”
-- ELI’s Senior Legal Advisor Megan Cornforth-Camden.
#hoiho #penguins #conservation
-- ELI’s Senior Legal Advisor Megan Cornforth-Camden.
#hoiho #penguins #conservation