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Estimating the feeding habits of corals may offer new insights on resilient reefs

Thu, 18 Oct 2018 14:11:49 EDT ~ Researchers have found that corals living in more productive waters take advantage of the increased food availability. The findings reevaluate scientific understanding of how corals survive and could aid predictions on coral recovery in the face of climate change. Find out more...

Piranha-like specimen, 150 million years old, is earliest known flesh-eating fish

Thu, 18 Oct 2018 14:11:29 EDT ~ Researchers have described a remarkable new species of fish that lived in the sea about 150 million years ago in the time of the dinosaurs. The new species of bony fish had teeth like a piranha, which the researchers suggest they used as piranhas do: to bite off chunks of flesh from other fish. Find out more...

Bioceramics power the mantis shrimp's famous punch

Thu, 18 Oct 2018 14:11:21 EDT ~ Researchers in Singapore can now explain what gives the mantis shrimp, a marine crustacean that hunts by battering its prey with its club-like appendages, the most powerful punch in the animal kingdom. They show that a saddle-shaped structure in the mantis shrimp's limbs, which acts like a spring to store and then release energy, is composed of two layers made of different materials. Find out more...

Life on the floor of the Arctic Ocean, with rigor and in detail

Wed, 17 Oct 2018 14:10:11 EDT ~ In an extensive and rigorous study of animal life on the Central Arctic Ocean floor, researchers have shown that water depth and food availability influence the species composition, density, and biomass of benthic communities. Find out more...

Bacterioplankton: Taking their vitamins

Wed, 17 Oct 2018 12:44:51 EDT ~ New research finds that more bacterioplankton utilize vitamin B1 or B1 precursors from their environment than synthesize their own. The researchers also found that B1 availability can directly limit bacterioplankton growth, which could have larger impacts on aquatic microbial food webs, as well as energy and nutrient exchange. Find out more...

Sex or food? Decision-making in single-cell organisms

Tue, 16 Oct 2018 15:42:41 EDT ~ Unicellular diatoms are able to adapt their behavior to different external stimuli based on an evaluation of their own needs. In experiments, Seminavis robusta diatoms directed their orientation either towards nutrient sources or mating partners, depending on the degree of starvation and the need to mate. Find out more...

Satellite tech to create more effective, 'true' shark sanctuaries

Tue, 16 Oct 2018 13:19:38 EDT ~ When they first set out to follow grey reef sharks around the Republic of the Marshall Islands (RMI), researchers intended to survey their movement in the protected waters there. What they found was a disturbing development for the Pacific island nation. Find out more...

Arctic sea ice decline driving ocean phytoplankton farther north

Mon, 15 Oct 2018 14:15:14 EDT ~ A new study reveals phytoplankton spring blooms in the Arctic Ocean, which were previously nonexistent, are expanding northward at a rate of one degree of latitude per decade. Although blooms did not previously occur in this area, phytoplankton were present in the Arctic's central basin at low biomass. The study also found the primary productivity of the phytoplankton, or the rate at which phytoplankton convert sunlight into chemical energy, is increasing during the spring blooms. Find out more...

Extensive trade in fish between Egypt and Canaan 3,500 years ago

Mon, 15 Oct 2018 10:04:51 EDT ~ Some 3,500 years ago, a brisk trade in fish on the shores of the southeastern Mediterranean Sea had already begun. This conclusion follows from the analysis of 100 fish teeth that were found at various archeological sites in what is now Israel. Find out more...

Sea snail shells dissolve in increasingly acidified oceans

Mon, 15 Oct 2018 08:46:11 EDT ~ Shelled marine creatures living in increasingly acidified oceans face a fight for survival as the impacts of climate change spread, a new study suggests. Find out more...