Marvee Sambajon

If you ever seen the seafloor after a seaweed bloom, it can get dark, and the mud might stink from decaying macroalgae. There are a lot of processes involved, mostly microbial. Nutrients have a surprising (to me) role in all of it. 🧪🌊
Link: pubs.acs.org/doi/abs/10.1...

“Our finding demonstrates that microbially driven OC degradation is a pivotal process coupled with nutrients cycling, advancing the mechanistic understanding of microbial carbon processing and its biogeochemical linkages during macroalgal decomposition in coastal ecosystems.” #Seaweed #MarineLife 🦑🌊

Your reminder that polar bears are marine mammals. 🐻‍❄️

They spend much of their lives on sea ice, swim long distances, and depend on the ocean for survival. Scenes like this—gliding among belugas—are a beautiful glimpse of just how connected Arctic life really is. 🌊🐋

New #climate #fish paper just dropped 🧪🌊🦑🐟🪸🎣

I know I mostly post about seas, but forests are very important too. Take a survey and help contribute to @biodiful.bsky.social’s research on how humans perceive forests.

Check out the survey here: www.biodiful.org#/forest

The tropics are hot, and during the early Eocene hyperthermals, they were ever hotter. But surprisingly, while there are reports of harmful algal blooms during some key events, the planktonic ecosystem shows remarkable resiliance across them. 🧪🌊⚒️

pubs.geoscienceworld.org/gsa/geology/...

Ailing "Megaberg" Sparks Surge of Microscopic Life - NASA Science As Iceberg A-23A disintegrated, it shed meltwater that helped fuel an extensive phytoplankton bloom in the South Atlantic Ocean.

After a 40-plus-year journey, 'megaberg' meltwater is fuelling blooms of microscopic phytoplankton, seen from space by @thenasaearth.bsky.social

🛰️ science.nasa.gov/earth/earth-...

US Government Is Accelerating Coral Reef Collapse, Scientists Warn Proposed Endangered Species Act rollbacks and military expansions are leaving the Pacific’s most diverse coral reefs legally defenseless.

CORAL REEF NEWS: US Government Is Accelerating Coral Reef Collapse, Scientists Warn

Read full story here: www.motherjones.com/politics/202...

#coralreefs #coralreefnews #governmentpolicy #coralhealth #coral #climatechange #coralbleaching #marineecology #marinebiology

Indigenous ocean voices are still being marginalised Despite progress and strong advocacy, some say local inclusion in ocean decisions is often still merely performative

Ask yourself: who is actually being heard in ocean conservation? Are they the voices of people who’ve stewarded the ocean for millennia? Too often, no. In @dialogueearth.bsky.social, @taotaotasi.bsky.social notes a hard truth: Indigenous leaders are often invited to speak—but not to decide. 🌊

End-of-century Arctic Ocean phytoplankton blooms start a month earlier due to anthropogenic climate change - Communications Earth & Environment Anthropogenic climate change impacts Arctic Ocean phytoplankton phenology, resulting in phytoplankton blooms which start 34 days earlier and last 15 days longer in 2100 compared with 1970, according t...

'Phytoplankton net primary production in the Arctic has historically been constrained to a short, intense summer bloom that sustains fish, seabird, and marine mammal populations. However, climate change is altering Arctic phytoplankton bloom phenology.'

www.nature.com/articles/s43...

🧪🌊🦑🐳 #WhaleWednesday #AlaskaSky

Fecal pellet packaging enhances marine carbon sequestration Fecal pellets produced by marine zooplankton contribute substantially to transporting biologically fixed carbon from the sunlit sea surface into deeper water layers. Their occurrence and composition ....

Led by Clarissa Karthäuser and her RotoBOD, we studied zooplankton fecal pellets, including very small ones; we find that here animals cannot be picky eaters, and that small pellets are efficient exporters with low remineralization 🌊
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...

Warm ocean water, not air temperature, drove massive Antarctic ice retreat after the last ice age  - British Antarctic Survey A new study concludes that warm ocean water was the primary driver of major West Antarctic Ice Sheet retreat since the end of the last ice age 18,000 years ago.

🌊 Warm ocean water, not air temperature, drove massive Antarctic ice retreat after the last ice age

www.bas.ac.uk/news/warm-oc...

Management Effectiveness for Marine Protected Areas | Reef Resilience Network

This is super cool news: the Reef Resilience Network just launched a free online course on Marine Protected Area management—available in 5 languages. Practical tools, real-world impact, & accessible globally. Exactly the kind of capacity-building ocean conservation needs right now. 🌊
#OceanHoptimism

I tried this survey of identifying real plankton images vs AI generated ones and I can say I am very happy with my score. As a non-scientist I think I did well. Go try it at daniela997.github.io/plankton-stu...

UV photos from my latest plankton sample. Pseudocalanus copepod, a barnacle nauplius, a Harpacticoida copepod.

#marineplankton 🦑

#DYK: Atlantic spotted dolphins can be identified over long periods of time by spot patterns, by flukes, and by dorsal fins.

Happy Saturday 🐬

#dolphin #dolphinresearch #scicomm #marinebio #oceanlife

🌍🔬 Microplastics are everywhere — from the ocean surface to the lower atmosphere and beyond.

Measuring them? Complex. Challenging. Evolving.

Join SOLAS Seminar XII
🗓 16 March 2026 | 🌐 Online
✨ Register now: zoom.us/meeting/regi...
ℹ️ Details: solas-int.org/events/solas...

The most wonderful expedition you've probably never heard about, but need to cheer on NOW. Follow 25 female indigenous & non-indigenous scientists, explorers, storytellers, artists & ocean advocates from 9 countries as they explore "the bottom of the world."
arcg.is/1HTTuv3
🌊 🦑 🧪 ⚒️ 🌎 🌍🌏 🇦🇶 #gischat

Valentine’s Day fieldwork in Bolinao, Pangasinan three years ago. #fieldwork

🧪🌊

GESAMP report on #microplastics transport into the marine environment is available online.

library.wmo.int/records/item...

@solas-ipo.bsky.social @usocb.bsky.social @geotraces.bsky.social

Reposting because I still feel frustrated about this.

Half of the world's coral reefs suffered major bleaching during the 2014–2017 global heat wave, estimates suggest Benefits to society from coral reefs, including fisheries, tourism, coastal protection, pharmaceutical discovery and more, are estimated at about $9.8 trillion per year. For the first time, an interna...

🌊 Half of the world's coral reefs suffered major bleaching during the 2014–2017 global heat wave, estimates suggest

phys.org/news/2026-02...

Plastic threats to coral reefs: A strategic management perspective from Bali's marine protected areas Plastic pollution remains a significant threat to coral reef ecosystems, even within Marine Protected Areas (MPAs). This study assesses the levels and…

🐠🌊 New paper led by Udayana University (Bali): plastic pollution in Marine Protected Areas.

📉 Coral cover declined (2015–24); 🧫 microplastics in coral tissue at all sites; 🪢 macroplastics drive damage.

🛠️ Strong case for improving upstream waste management.

“Protected” doesn’t mean insulated.

Sitting senators are siding with China instead of the Philippines and the Filipino people on the issue of the West Philippine Sea. One even brought up the idea of giving up the Kalayaan Island Group. Shows clear lack of maritime knowledge and definite lack of patriotism. Shameful and disgusting.

Scientific expedition confirms vast freshwater reserve beneath ocean floor Researchers yet to fully understand how freshwater is trapped in pockets under seafloor

🌊 Scientific expedition confirms vast freshwater reserve beneath ocean floor

IODP EXP 5O1

www.independent.co.uk/news/science...

Lab-grown algae remove microplastics from water A University of Missouri researcher is pioneering an innovative solution to remove tiny bits of plastic pollution from our water. Mizzou's Susie Dai recently applied a revolutionary strain of algae to...

Very promising.
phys.org/news/2026-02...

Can phytoplankton help close the carbon dioxide removal (CDR) gap? Ocean Visions’ new report examines whether and how phytoplankton might contribute to the gigatons of CDR needed to meet global climate goals. 🔗LEARN MORE: oceanvisions.org/phytoplankto...

Coral Diversity Drops as Ocean Acidifies - Eos As seawater becomes steadily more acidic, complex branching corals die off and are replaced with hard boulder corals and algae.

There’s no tipping point beyond which ocean acidification kills corals, new research shows. With every creeping bit of acidification, corals just continue to die off. 🧪🌊 eos.org/articles/cor...

One-Third of Pacific Island Fish Contaminated With Microplastics - Inside Climate News From the coral-covered coastlines of Tonga to the remote sandy atolls of Tuvalu, microscopic synthetic fibers are infiltrating the region’s species and food systems. One-third of fish living in Pacifi...

One-Third of Pacific Island Fish Contaminated With Microplastics.
Ahead of February’s Global Plastics Treaty negotiations, new data reveals the contamination rate of Fijian fish far exceeds worldwide averages.
insideclimatenews.org/news/2801202...