Oceanography | Marine Science and Ocean Stories
Oceanography is a marine science podcast exploring what we know about the ocean, how we know it, and how that knowledge informs decisions. Hosted by Clark Marchese, it features conversations with researchers, conservationists, policymakers, Indigenous knowledge holders, and storytellers. Episodes cover topics from whale calls and pollution to research vessels and international policy. The show aims to make complex science accessible while connecting marine biology with conservation, technology, justice, and global policy. It is endorsed by the UN Decade of Ocean Science and produced by Pine Forest Media.
Episodes
From Collapse to Comeback: How Sustainable Fisheries Are Built
Not long ago, the race to catch fish was pushing some U.S. fisheries toward collapse. Fishing seasons became shorter, boats went out in dangerous conditions, and fishermen, scientists, regulators, and conservationists often saw one another as enemies. So how did they begin working together?Amanda Leland, executive director of Environmental Defense Fund and co-author of Sea Change, tells the story
Sky Truth: From Satellite Data to Ocean Action
Satellites can reveal what is happening at sea. SkyTruth founder John Amos explains how seeing previously hidden oil slicks from space changed the course of his career, and why he believes environmental data should be free and public. The conversation follows satellite imagery, AIS vessel tracking, and machine learning into tools such as Global Fishing Watch and Cerulean, which make fishing
How Many Species Are There in the Sea? Marine Taxonomy Explained
Naming ocean life is the first step toward protecting it. In a live conversation with his former professor, host Clark Marchese asks marine biologist Dr. Manuel Caballero Gutiérrez how many species live in the sea and why the answer remains uncertain. The episode follows marine taxonomy through deep-sea expeditions, DNA analysis, museum collections, and formal species descriptions, connecting spec
Hadal Zone Master Class with Professor Alan
What happens at the deepest points of the ocean? This week on Oceanography, we’re sharing a special feed drop episode from Deep Sea Pod, hosted by Thomas Linley and Alan Jamieson — two scientists many of you may already recognize from previous Oceanography episodes like What Is the Deep Sea Even Like? and Ocean Trenches Explained.In this episode, Professor Alan Jamieson takes listeners on a deep
Climate Change in 2026: Where Are We Now?
Where does climate change stand as 2026 unfolds? This Green Frequency crossover steps back from the ocean to assess the wider climate system. Climate scientist Dr. Claudio Piani and student activist Averie Gannon examine global emissions, the Paris Agreement, renewable energy progress, and why every fraction of a degree still matters. It is a grounded climate change 2026 briefing on what is improv
Elephant Seals Can Be Scientists Too
Elephant seals collect data where ships rarely can. In this South Pole crossover, Dr. Clive McMahon explains how animal-borne sensors turn deep-diving southern elephant seals into partners in Southern Ocean monitoring. The tags collect temperature, salinity, depth, and ocean productivity data, especially during the Antarctic winter. The episode also explores seal behavior, population decline, Anta
Solar Geoengineering: Who Gets to Decide?
Solar geoengineering is also a question of power. Hassaan Sipra of the Alliance for Just Deliberation on Solar Geoengineering explains the governance and climate justice issues surrounding solar radiation modification. The conversation centers Global South and climate-vulnerable communities, meaningful participation, consent, research transparency, and the absence of robust international rules. It
A Natural Experiment in the Sky: Shipping, Clouds, and Climate
Cleaner ship fuel created a climate experiment. Meteorologist Dr. Michael Diamond explains how shipping emissions influence cloud formation above the ocean and how the IMO sulfur cap changed that signal. Combined with disruptions to major shipping routes, the policy gave researchers a rare natural experiment for studying aerosols, clouds, and climate. The results also inform current questions abou
Stratospheric Aerosol Injection: Should We Reflect More Sunlight?
Reflecting sunlight would also change the ocean. Dr. Kelsey Roberts explores stratospheric aerosol injection through ocean and marine ecosystem models. The conversation examines possible changes to sea surface temperature, ocean chemistry, net primary production, fisheries, and food webs under different scenarios. It also explains why modeling is useful at this early stage and why the uneven ecolo
Marine Cloud Brightening: Can Brighter Clouds Cool the Planet?
Brighter marine clouds could cool parts of the ocean. Climate scientist Dr. Jessica Wan explains marine cloud brightening, a proposed solar geoengineering method that would add sea-salt particles to low marine clouds. Learn how stratocumulus clouds reflect sunlight, what climate models suggest about regional cooling, and why scale, uncertainty, side effects, and governance matter. The episode trea
mCDR: Can the Ocean Store Our Carbon for Centuries?
Can the ocean keep carbon out of the atmosphere? Oceanographer Dr. Morgan Raven explains marine carbon dioxide removal and the search for environments that can store organic carbon for long periods. The conversation moves through mangroves, fjords, oxygen-poor waters, and deep-sea brines to examine ocean carbon sequestration. It also makes the uncertainties clear, including measurement, ecological
Biocultural Coastal Conservation | Ancestral Tides
Ocean conservation can begin with ancestral relationships. Conservation scientist Juan Carlos Cruz explains how the Ancestral Tides initiative supports biocultural conservation with Indigenous and local coastal communities across Latin America. The work brings Indigenous knowledge and marine science together around sea turtle conservation, mangroves, coral reefs, and nesting beaches. The episode c
Ocean Trenches Explained
Every ocean trench is a world shaped by geology. Professor Alan Jamieson guides a journey into the hadal zone, beginning around 6,000 meters below the surface. Learn how tectonic plates create ocean trenches, why pressure and isolation produce distinct habitats, how life survives at full ocean depth, and what decades of deep ocean exploration have corrected about the popular image of a single empt
What is the Deep Sea Even Like?
The deep sea is not one dark, featureless place. Deep-sea researcher Dr. Thom Linley maps the ocean below sunlight as a connected world of depth zones with changing pressure, temperature, food, and life. From the bathyal and abyssal zones to hadal trenches, the episode explains how animals adapt, why scientific boundaries are useful but imperfect, and what technology is required for deep ocean exp
What is Ocean Deoxygenation?
The ocean is losing oxygen, with effects across food webs. Dr. Sven Pallacks explains ocean deoxygenation, how oxygen enters and moves through seawater, and why oxygen minimum zones develop. The episode connects warming, circulation, dead zones, and marine life, then uses fish ear stones called otoliths to examine past declines in mesopelagic fish. A clear introduction to an invisible change resha
Ocean Story Hour: Making Marine Biodiversity Visible
Ocean science only matters if people can connect with it. Science communicator Anabelle Chaumun explains why marine biodiversity is difficult to make visible, why misinformation can outpace evidence, and how ocean storytelling can stay accurate while still feeling human. The episode also introduces EMBRC's network of European marine stations and explores documentary photography, ethics, representa
Science Toward Solutions: 20 Years of Ocean Microplastics
Microplastics research has reshaped the questions. Dr. Winnie Courtene-Jones reviews what ocean microplastics science now shows about sources, movement, accumulation, and effects on marine food webs. The conversation also maps the major unknowns, including nanoplastics, fragmentation rates, and thousands of chemicals associated with plastics. It closes by connecting marine pollution research with
Marine Heat Waves and Japanese Meteorology
A marine heat wave can make the land even hotter. Japan Meteorological Agency scientist Hirotaka Sato explains how the 2023 marine heat wave near northern Japan amplified record-breaking summer temperatures onshore. The episode traces ocean-atmosphere heat transfer, cloud and humidity feedbacks, and weakened sea-breeze cooling to show how unusually warm water can intensify extreme heat and complic
Before the Oil Spill: Baseline Ocean Data and Marine Microbes
Oil-spill science starts long before a disaster. Marine microbial oceanographer Dr. Alice Ortmann explains why baseline ocean data are essential for detecting change around offshore oil and gas activity near Newfoundland. Learn what counts as an oil spill, how oil and methane move through the water, and how marine microbes help researchers assess deep sea ecosystem health, pollution risk, and envi
50 Years of Ocean Science: The R/V Endeavor Retires
For 50 years, one ship carried ocean science to sea. As the R/V Endeavor retires, operations manager Brendan Thornton and veteran captain Chris Arminetti look back on the people, expeditions, and practical work that kept a floating laboratory running. The conversation follows the research vessel's final voyage, its role in training generations of oceanographers, and what its legacy means for the n
COP30: Green Power
COP30 exposed the distance between promises and power. Clark Marchese closes the Belém reporting arc with a broader analysis of climate policy, scientific reports, carbon markets, emissions, China's energy transition, the United States' absence, and the meaning of a just transition. With Carola Mejía of Latindadd, the episode examines the Tropical Forest Forever Facility and the tensions among cli
COP30: Oceans on the Rise?
The ocean took center stage at COP30. This episode of Oceanography explores how ocean science, policy, and lived experience shaped the climate conversations at COP30 in Belém, Brazil. From marine carbon dioxide removal and blue carbon ecosystem restoration to funding gaps and governance challenges, the episode traces how the ocean is increasingly framed as both a climate solution and a site of urg
COP30: Belém Amazônia
Voices from Belém COP30 brought global climate negotiations to Belém, a city where the Amazon meets the sea. This episode offers a grounded introduction to the conference by centering the people who live there. Activist Catarina Nefertari and artist and event producer Danilo Pontes share what the event meant for their communities, the environmental challenges facing Pará, and how local experiences
Underwater Rainforests: Kelp Forests and Seaforestation
Kelp forests support wildlife, coastlines, and culture. Scott Bohachyk of Ocean Wise and James LaFlamme of the Tseshaht First Nation discuss kelp forest restoration on Vancouver Island. Learn how seaforestation supports biodiversity, buffers shorelines, and participates in carbon cycling, as well as why Indigenous stewardship shapes where and how restoration happens. The episode treats kelp as an
From Movie to Movement: The Trees & Seas Film Festival
A film festival can turn a screening into action. Julie Anderson of Plastic Oceans International explains how the Trees & Seas Film Festival links environmental storytelling with community participation. Through participatory film activism and the Blue Communities model, screenings become starting points for local dialogue, education, cleanups, and longer-term conservation work. The episode as
OceanOmics: eDNA to Guide Marine Protection
A bottle of seawater can reveal an entire ecosystem. Dr. Michael Bunce, director of OceanOmics, explains how environmental DNA and genomics detect organisms from microbes to megafauna. Follow an eDNA sample from deck to laboratory to digital dashboards, where AI tools can help interpret complex data for fisheries and marine protected areas. The episode also explores DNA barcoding, species identifi
Blue Carbon in Antarctica: Life Beneath the Sea Ice
Antarctica stores carbon far below the sea ice. Marine ecologist Dr. Nerissa Bax explains Antarctic blue carbon and the role that seafloor communities, including sponge fields and coral gardens, play in carbon uptake and storage. The conversation explores how ice retreat can alter these systems, what researchers still need to measure, and why Southern Ocean conservation and governance matter for p
Ocean x New York Climate Week
Climate Week put the ocean inside the climate debate. Reporting from New York Climate Week, host Clark Marchese follows the ocean issues shaping a much larger global gathering. The episode connects Indigenous leadership, the changing role of NOAA, coral restoration, conservation finance, and emerging ocean technologies. It is an on-the-ground account of how marine science, policy, and storytelling
What is the Ocean Twilight Zone (and How to Protect It)
The ocean twilight zone is vast, active, and at risk. Ocean Conservancy's Chris Dorsett guides us through the mesopelagic zone, roughly 200 to 1,000 meters below the surface. The episode explores daily vertical migration, biodiversity, the biological carbon pump, and growing interest in industrial fishing and other uses of this little-known ecosystem. It also examines Motion 035 and the case for s
Toothfish, Climate Genomics, and the Southern Ocean
Antarctic fish evolved for an ocean near freezing. Marine biologist Dr. Jilda Alicia Caccavo explores pelagic notothenioids, including commercially fished toothfish and the icefish known for colorless blood. Learn how antifreeze proteins and genomic traits support life in the Southern Ocean, how climate genomics reveals population vulnerability, and why changing ocean conditions should inform Anta
Spotting Pseudoscience - All Around Science Drop
How do you tell the difference between sound science and pseudoscience? In this special feed drop from All Around Science, we explore the red flags that signal when claims aren’t backed by real evidence — and how to think critically about the information we encounter every day.At Pine Forest Media, our mission is to make science more accessible, reliable, and engaging. That doesn’t just mean shari
Coral Reefstoration Ghana: A New Dive Lab
Ghana's first Dive Lab brings ocean science underwater. George Amadou and filmmaker David Selasi Kuwornu explain how Coral Reef Restoration Ghana trains marine biology students in scuba diving and underwater cinematography. The six-day program addresses barriers to ocean access while building local skills in reef monitoring and science communication. The episode also examines coral reef threats, d
The Ocean's Safety Nets: Marine Protected Areas
Marine protected areas need more than a boundary. Jamie Blatter of the California Marine Protected Area Collaborative Network explains how MPAs are designed, monitored, and maintained. The conversation explores community partnerships, Tribal participation, climate readiness, and the evidence used to assess whether protection is working. A practical look at how marine protected areas turn ocean res
Our Green Sea: Plankton, CO2, and NASA EXPORTS
Plankton help move carbon into the deep ocean. PhD candidate Erin Jones explains how microzooplankton shape the biological carbon pump, a system that transfers carbon through marine food webs and into deeper waters. Learn why plankton diversity matters, what scientists still do not understand about carbon export, and how NASA EXPORTS connects field measurements with satellite observations to study
Glow in the Dark: the Magic of Ocean Bioluminescence
Ocean bioluminescence is more than a blue glow. Marine ecophysiologist Dr. Laurent Duchatelet explains how living light works and why sharks, fish, and plankton use it for hunting, camouflage, defense, and communication. The episode explores luciferin and luciferase chemistry, rare red light in the deep sea, bioluminescent sharks, and how studying marine light can support new biomedical research.S
How to Set an Ocean Agenda: The UN Ocean Decade Explained
The UN Ocean Decade gives ocean science a roadmap. Alison Clausen, Deputy Global Coordinator of the UN Ocean Decade, explains how the 2021 to 2030 initiative connects ocean research with sustainable development, policy, and public participation. The conversation covers the science-policy-society interface, the role of Indigenous and local knowledge, how projects are endorsed, and what meaningful p
Sea Turtles and Plastic Straws: Ten Years Later
One sea turtle video changed the plastics debate. A decade after the viral footage of a plastic straw being removed from a turtle's nose, marine biologist Dr. Christine Figgener reflects on what that moment changed and what it could not. This Plastic Podcast crossover connects sea turtle research, migration, feeding biology, plastic pollution, science communication, and the complicated path from p
The Secret Life of Deep Sea Symbiosis
Deep-sea animals survive through microbial partnerships. Dr. Shana Goffredi explores microbial symbiosis at methane seeps and hydrothermal systems, where chemosynthetic bacteria turn chemical energy into food. Meet worms, clams, snails, and other animals whose bacterial partners help them thrive in darkness, sometimes without a mouth or conventional digestive system. It is a fresh look at deep sea
Contaminated Coasts: Submarine Groundwater Discharge
Pollution can reach the sea from underground. Marine geochemist Dr. Tristan McKenzie explains how submarine groundwater discharge carries nutrients, heavy metals, and pharmaceuticals into coastal waters. Drawing on research in Hawaii and Sweden, the episode explores geochemical tracers, groundwater pollution, and the hidden pathways connecting activity on land with ocean contamination and coastal
What does the ocean sound like? Marine Bioacoustics Explained
The ocean is loud, and every sound carries clues. Marine biologist Dr. Jesús Alcázar-Treviño explains how toothed whales use echolocation to hunt and coordinate in darkness, how eruptions in the Canary Islands reshape ocean soundscapes, and how human noise pollution disrupts marine communication. An accessible introduction to marine bioacoustics and the many biological, geological, and human sound
How to save the whales (like, actually)
Can fishing gear protect whales and livelihoods? NOAA fisheries biologist Megan Amico explains how on-demand, or ropeless, lobster gear can reduce the vertical lines that entangle endangered North Atlantic right whales. The conversation follows gear testing with fishermen, seasonal closures, coastal economies, and the difficult work of designing marine conservation policy that protects both whales
Oceanography Trailer
Oceanography is a marine science podcast about the research happening beneath the surface—literally. It’s where your favorite science 101 class meets environmental journalism, with weekly conversations featuring marine biologists, oceanographers, and climate scientists from around the world. One week we might explore whale communication or how sound travels underwater; the next, we’re looking at f
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