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Experimental crystals

Experimental crystals

Crystals of aragonite, a form of calcium carbonate, grew together in a “bowtie” bundle—a classic mineral crystal growth pattern—when grown in the laboratory under controlled experimental conditions. This experiment is…

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Buoys hunting for data

Buoys hunting for data

Researchers and crew on the research vessel Knorr prepare to recover a meteorological buoy that had broken loose in February 2007. They were in transit to the fourth of six…

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Christmas Coral

Christmas Coral

New skeleton made by a two-week old baby Porites “porous” coral reared in an experimental aquarium at the Bermuda Institute for Ocean Sciences looks like a miniature Christmas tree. The…

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A warning

A warning

A lionfish spreads out distinctively-patterned fins around its body and shows its zebra stripes. Such striking beauty hides a deadly secret: the lionfish has venomous spines hidden among the dorsal…

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Bacterial conversations

Bacterial conversations

Holding up a culture plate, Joint Program student Laura Hmelo checks the growth of bacterial colonies. Hmelo is studying a phenomenon called bacterial “quorum sensing”— how marine bacteria found in…

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A very long corer

A very long corer

In 2007, WHOI geologists retrieved the first sediment cores with the newly installed “long-corer” on the research vessel Knorr. Bill Curry, Jim Broda, and several WHOI colleagues conceived and built…

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When corals bleach

When corals bleach

Coral’s colors come from symbiotic algae cells living inside individual corals, or polyps. This  “bleached” coral has expelled much of its algae in response to the stress of unusually warm…

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Once a lake, now a canyon

Once a lake, now a canyon

WHOI researchers took a 40 minute hike from their camp on Greenland’s ice sheet this summer to this lake bed (full, it measured more than 3 kilometers in diameter). An astounding…

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Peek-a-boo grouper

Peek-a-boo grouper

A Nassau grouper (Epinephelus striatus) peeks out from his hiding place along Glover’s Reef in Belize. These large fish have a breeding behavior that makes them especially vulnerable to overfishing…

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Ready for a lift?

Ready for a lift?

Alvin breaks the surface and engineering assistant Mike McCarthy talks to the pilot in preparation for recovery operations after a LADDER III project dive to a hydrothermal vent site in…

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Measuring corals in the Red Sea

Measuring corals in the Red Sea

Through a research agreement with King Abdullah University of Science and Technology, WHOI scientists are studying coral reef ecosystems, fisheries, and water circulation along Saudi Arabia’s Red Sea coast. The…

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Crystals from corals

Crystals from corals

Seen under a microscope, tiny crystals of aragonite (a form of the mineral calcium carbonate) are carefully organized into a “dissepimental sheet” in the skeleton of a Porites coral. Corals…

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Reaching for the high water mark

Reaching for the high water mark

Until it drained, the depth of this lake on Greenland’s ice sheet reached seven feet (the day before this photo was taken, the spot where University of Washington graduate student Kristin…

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Food by day, shelter at night

Food by day, shelter at night

At night, illuminated by the photographer’s flash, a brilliant 18-inch-long parrotfish hides in a niche surrounded by equally brilliant corals in the Red Sea. In daylight, parrotfishes feed on coral,…

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Waiting for a ride

Waiting for a ride

After dismantling six sleeping tents, a cook tent, and packing instruments and gear, WHOI and University of Washington scientists (who had spent weeks working on Greenland’s ice sheet) waited for…

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Red Sea reef

Red Sea reef

Reef-building corals create habitats for many other organisms. The corals reefs of the Red Sea are highly diverse and unique in the world, providing shelter and sustenance for abundant fishes…

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A new star

A new star

New skeleton made by an eight-day old baby “golfball coral” reared in an experimental aquarium at the Bermuda Institute for Ocean Sciences forms a star-shape. The ongoing experiment is part…

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Ready to roll

Ready to roll

Members of the REMUS 6000 Operations Group Stephen Murphy (right) and Mark Dennett (left) roll out one of two newly-built Hydroid REMUS 6000 Autonomous Underwater Vehicles (AUVs) for transport to…

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Mud, shells, and monsoons

Mud, shells, and monsoons

Joint Program student Fern Gibbons  scoops thin slices of mud from a long sediment core taken from the sea floor. Rinsing the mud samples through a sieve releases tiny fossil…

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Hunting for eddies

Hunting for eddies

“Hunting for eddies—this is effectively what we are doing with this instrument,” said Fiammetta Straneo, a researcher at Woods Hole Oceanographic Institution. This month, Straneo’s team is looking for eddies that…

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Home on the reef

Home on the reef

An orange clownfish (Amphiprion percula) peeks out from the protection of sea anemones on a reef in Kimbe Bay, Papua New Guinea. Clownfish are the focal species in ongoing research…

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Give ’em the hook

Give 'em the hook

Following a June 2008 dive off the west coast of Mexico, Alvin technician Jeff McDonald and Atlantis’ steward Carl Wood reach for the submersible’s tail line in preparation for “recovery”…

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Working around the clock

Working around the clock

Entries in the log mark the scientific work that continues day and night on an oceanographic cruise. During a recent cruise aboard the R/V Oceanus that WHOI scientist Phoebe Lam participated in,…

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