Science8 min read
Marine Snow: The Ocean's Slow Carbon Conveyor
Marine snow is the ocean's constant drizzle of sinking organic matter — and one of the main routes by which carbon reaches the deep sea. Here's how it works.
Priya Raman ·
Ocean Science
Explainers on the physics, chemistry and biology of temperate seas — marine heatwaves, upwelling, holdfast biology, trophic cascades, eDNA.
213 articles
Science8 min read
Marine Snow: The Ocean's Slow Carbon Rain
Marine snow is more than falling debris — each flake is a sticky, living microhabitat. How aggregates form, who lives on them, and why they matter.
Dr. Theo Nakamura ·
Science8 min read
Marine Snow and Kelp: The Slow Conveyor of Carbon to the Deep
Kelp forests shed huge amounts of carbon as detritus. How storms, microbes and sticky aggregates turn that debris into marine snow — and where it lands.
Priya Raman ·
Science7 min read
Measuring Ocean pH: From Lab Spectrometry to Wandering Sensors
How oceanographers measure seawater pH and alkalinity, why it's harder than it looks, the sensor zoo from Argo floats to moorings, and what the numbers mean.
Dr. Lena Fischer ·
Science9 min read
Mesoscale Eddies and the Coastal Ocean: How Spinning Water Feeds Shelves
Mesoscale eddies — the ocean's weather systems — shuttle nutrients and larvae across continental shelves. How they form, how they're seen, why kelp cares.
Dr. Lena Fischer ·
Science8 min read
The Microbial Loop: How the Ocean's Smallest Life Recycles Everything
Most of the ocean's carbon never gets bitten by anything. Meet the microbial loop — the invisible recycling circuit that turns leaks and corpses back into food.
Dr. Mara Ellison ·
Science10 min read
Microplastics in Kelp Forests: What We Know and Don't
Tiny plastic fragments have reached every ocean habitat, kelp forests included. What the evidence shows about microplastics on reefs — and the honest gaps.
Dr. Mara Ellison ·
Science9 min read
Microplastics in the Kelp Forest: Sources, Exposure and What the Monitoring Actually Says
What do microplastic monitoring programs actually measure on kelp coasts — and what do the results say? Sources, exposure pathways and the honest state of the data.
Dr. Mara Ellison ·
Science11 min read
Mixed Layer Depth: The Ocean's Surface Engine
The ocean's mixed layer — its wind-stirred surface engine — sets how much light plankton see and when deep nutrients return. How mixed layer depth works and why it matters.
Dr. Lena Fischer ·
Science9 min read
Marine Protected Areas That Talk to Each Other: The Science of Networks
A single marine reserve protects what lives inside it. A network of reserves, sized and spaced for drifting larvae, can protect a whole coastline. Here's the science.
Dr. Mara Ellison ·
Science7 min read
The Marine Nitrogen Cycle: The Engine Behind Every Kelp Forest
How nitrogen moves through coastal ecosystems — nitrate, ammonium, microbes and upwelling — and why the nitrogen cycle decides where kelp forests thrive.
Dr. Theo Nakamura ·
Science8 min read
Ocean Acidification and Kelp: Winners, Losers and Open Questions
Rising CO₂ acidifies seawater — but it also fertilises algae. What ocean acidification really does to kelp growth, urchins and whole reef food webs.
Dr. Theo Nakamura ·
Science9 min read
The Biological Carbon Pump: How the Ocean Ferries Carbon to the Deep
The biological carbon pump moves billions of tonnes of carbon from the sunlit surface into the deep ocean every year. Here's how the living conveyor works.
Priya Raman ·
Science10 min read
Why the Ocean Changes Colour: Chlorophyll From Space
Why the sea turns green, turquoise or milky — and how ocean-colour satellites read chlorophyll from orbit to map blooms, currents and ocean life.
Dr. Mara Ellison ·
Science10 min read
Ocean Deoxygenation: The Ocean's Breathlessness
The ocean is losing oxygen — measurably and globally. How warming and nutrient stress squeeze marine life's air supply, and what that does to kelp forests.
Dr. Lena Fischer ·
Science9 min read
Ocean Fronts: Where Two Waters Meet and Life Explodes
Ocean fronts — the sharp boundaries where different water masses collide — concentrate plankton, baitfish and predators into living lines. Here's why they matter.
Dr. Lena Fischer ·
Science11 min read
Ocean Gliders: Slow Robots, Long Missions
Ocean gliders ride buoyancy, not propellers, for months at sea. How these slow torpedo-shaped robots survey storms, currents and kelp coasts on sips of power.
Dr. Mara Ellison ·
Science10 min read
Ocean Gyres: The Great Slow Wheels of the Sea
Five vast gyres turn like slow wheels in every ocean basin, shaping currents, climate and where plastic gathers. Here's how ocean gyres actually work.
Dr. Lena Fischer ·
Science10 min read
Ocean Heat Content: How We Measure a Warming Ocean
Over 90 percent of the planet's trapped heat is in the ocean. How we measure ocean heat content, from expendable probes to 4,000 drifting floats — and why it matters.
Dr. Lena Fischer ·
Science12 min read
The Ocean's Nutrient Engine: Nitrogen, Phosphorus, Silica and Iron
Kelp blades and diatom blooms run on four nutrients: nitrogen, phosphorus, silica and iron. Where each comes from, where it runs out, and why that shapes the sea.
Dr. Theo Nakamura ·
Science9 min read
Wired Reefs: What Cabled Ocean Observatories See That Ships Can't
Cabled ocean observatories plug the deep sea into fibre and power, streaming data around the clock. What these wired reefs see that research ships can't.
Dr. Lena Fischer ·
Science9 min read
The Ocean's Oxygen Budget: How Much Does the Sea Really Breathe Out?
'Every second breath comes from the ocean' — true, and incomplete. Here's the ocean's real oxygen budget, who pays in, and kelp's honest share.
Dr. Lena Fischer ·
Science9 min read
Turbidity: What a Storm Does to the Light Kelp Needs
Storms turn coastal water murky, dimming the light kelp depends on. How turbidity works, where the sediment comes from, and how long forests stay in the dark.
Dr. Mara Ellison ·
Science9 min read
Turbulence and Kelp: How Small-Scale Mixing Feeds Every Blade
Kelp blades can't drink faster than the water next to them allows. How blade-scale turbulence and boundary layers quietly control how fast a whole forest eats.
Dr. Lena Fischer ·