The Weekly Dive Vol. 64

Dive into the latest edition of The Weekly Dive, where we bring you the big ocean news!

Chinese foreign fishery catch vastly underreported. A recent study has estimated that Chinese fleets outside their own waters catch 4.6 million tonnes per year or US$11.5 billion worth of fish. That’s 12 times more than is reported to the UN. Most of it comes from Africa. [Science Daily; Fish and Fisheries]   

Dolphin-safe tuna certification requirements expansion proposed. In response to the World Trade Organization’s finding that current regulations put Mexican tuna fishermen at a trade disadvantage, the National Marine Fisheries Service has proposed expanding requirements to ensure “no dolphins are killed or seriously injured.”  [The Los Angeles Times; Federal Register]  

Air pollution can slow coral growth. Fine particles called aerosols, which come from burning fossil fuels (and volcanoes), can shade corals from sunlight and slow their growth. However, scientists also speculate that the resultant cooler water temperatures could protect the corals from bleaching. This is the first study to link air pollution levels and effects on corals. [Science Daily]   

Protecting marine environment boosts local economies. New research shows how marine reserves not only help biodiversity but also can have economic benefits, sometimes compensating for the initial cost of the protections in just five years. This was published along with recommendations for estimating costs and benefits of local reserves – a business plan.  [National Geographic; PLoS ONE] 

Manatees in Florida and sea lions in California face major losses. Ongoing stranding of hundreds of sea lion pups in Southern California, the cause of which is unknown, has been officially recognized as an “unusual mortality event.” An algae bloom in Florida has been fatal for many endangered manatees, and deaths seem sure to increase, as the toxin clings to seagrass. [The Los Angeles Times; The New York Times]    

Extreme ocean kayaking - with lava. Watch below to see professional kayakers take on the boiling waters near an active lava flow in Hawaii. 

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