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That is a Spat

That is a Spat

All coral colonies start off as a single newly settled polyp, or “spat.” This single polyp grows and divides asexually into thousands of clonal polyps that form a colony. Hanny…

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Small Plate

Small Plate

It’s a simple fact of life in the ocean that there are more small marine animals than large ones, but that it’s easier to tag a large animal than a…

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Just a Little Off the Top

Just a Little Off the Top

Kirstin Meyer, a postdoctoral scholar at WHOI, holds an underwater note pad near a juvenile Porites lobata coral that she just sampled. You can see the little white area in…

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Early Expeditions

Early Expeditions

Columbus O’Donnell Iselin, director of Woods Hole Oceanographic Institution from 1940 to 1950 and from 1956 to 1958, watches as scientist Edmund Watson and others depart on a research expedition…

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Frozen PIES

Frozen PIES

From left, WHOI mooring technician Meghan Donohue, University of Oregon professor Dave Sutherland, and WHOI scientist Magdalena Andres deploy an instrument known as PIES—a pressure-sensor equipped inverted echo sounder—in the Sermilik Fjord…

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A Gobbling Deep-Sea Vehicle

A Gobbling Deep-Sea Vehicle

WHOI engineer Justin Fujii had a bit of fun in 2016, dressing up the deep-sea robot Sentry with electrical tape to celebrate a Thanksgiving conducting research at sea. Sentry is…

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Radioactivity in the Ocean

Radioactivity in the Ocean

Crew members on the Japanese research vessel Shinsei Maru deploy a “multi-corer” to collect samples of seafloor sediments just offshore from the Fukushima Dai-ichi nuclear power plant. WHOI scientist Ken…

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Scallops Under Threat

Scallops Under Threat

Atlantic sea scallops are a $500 million annual industry, but WHOI scientists believe they may be in danger. A new model developed by WHOI researcher Jennie Rheuban suggests that as human-induced climate change…

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Ancient Inlet

Ancient Inlet

WHOI Summer Student Fellow Rachel Gold (Brown University) examines a sediment core from Lake Carmi, Vermont. The sediments provide evidence of an inland sea—formerly known as the Champlain Sea—that flooded…

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Who is WHOI?

We are scientists, engineers, and technicians pushing the frontiers of ocean research.

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Groundwater and the Ocean

Groundwater flows from land to sea, mixing with saltwater underground. Though just 5% of ocean inflow, it can carry high chemical loads that impact coasts.

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El Niño and La Niña

El Niño brings Pacific warming, East African rains, and Asian droughts. La Niña flips the pattern. This natural cycle shifts global rainfall every few years.

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Samoa Chain

Hotspots like Samoa and Hawaii form island chains as magma erupts through the crust while tectonic plates drift over a fixed source deep in the mantle.

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Arctic Halocline

As sea ice forms, it releases salt, making surface water sink—creating a cold layer that shields the ice from deeper, warmer waters below.

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Elemental Journeys

Vast amounts of elements move via nature and humans—through erosion, rivers, farming, and more—measured in Pg, Tg, and Gg. HANPP tracks our impact.

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Lethal Interactions

Researchers summarized lethal interactions among 185 strains of Vibrio bacteria in a circular family tree diagram, showing relatedness of individual strains.

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How biofilm forms in the sea

Biofilms form as bacteria settle and produce slime. Fighting them may work better by boosting natural biofilm reduction: bacterial detachment and protist predation.

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Where the whales are

Fresh coastal currents meet salty ocean water to form a front where copepods aggregate in dense surface patches, creating feeding hotspots for marine life.

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RAFOS Floats

RAFOS floats measure temperature, salinity, and pressure at depth. They drift, then surface to transmit data via satellites to scientists onshore.

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