The Weekly Dive Vol. 43


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

Litter increasing in Arctic deep sea. Comparing images of the seafloor from previous years, scientists found that over the last approximately 10 years, the amount of litter has doubled. The numbers in this remote habitat were unexpectedly much higher than off the populated coast of Lisbon, Portugal. [Science Daily]  

Some Fukushima fish still contaminated with radiation. 40% of fish caught in the area are considered unsafe under Japan’s recently tightened regulations, indicating the pollution source is still at large. Bottom-dwellers are the most affected, suggesting caesium pollution is concentrated in seafloor sediments. [The BBC]

US and New Zealand compromise on proposal for Antarctic protection. The new joint proposal incorporates an area open to “light” fishing, as well as a larger closed “special research zone,” though some uncertainties remain. NZ’s previous proposal left a more expansive area open for fishing, while the US and the Antarctic Ocean Alliance had wished to create a complete no-take zone. [Treehugger] 

Japan will ban the expansion of bluefin tuna farms. “Farming” of bluefin (collecting live wild juvenile fish, holding them in pens and fattening them for slaughter, also known as "ranching") will be limited in the future to prevent overfishing.  [Japan Times] 

Reef fish native to Mexico found by Catalina Island. A diver has recently identified a variety of damselfish in California waters that was previously only seen off Mexico - the closest place it could have originated from is Guadalupe Island, 300 miles away. How this minute reef fish traversed the distance is still unknown. [Reef Check]  

Whale vocalizations made the ocean louder 200 years ago than it is today. Ocean background noise level today is 10 times louder than it was 50 years ago, but still not as loud as it was prior to industrial whaling. However, this does not alleviate concerns about modern anthropogenic noise, which has different qualities, harming sealife. [Newswise]    

Fisheries rule may limit scientific access to data. NOAA has drafted a rule restricting public access to independent fisheries observer data claiming a need to protect personal and business confidentiality. Scientists say it goes too far, and could also limit access for research purposes. [The New York Times] 

Images of dolphins stranded in dry aquarium tanks during cleaning spark outrage online. Photos show dolphins lying on a dry aquarium tank floor in Japan, while cleaning staff work around them. Dolphin advocate Ric O’Barry says this is a cruel and unfortunately common practice in many aquariums around the world. [Take Part] 

Diver at the dentist. It turns out that cleaner shrimp are willing to take any customer.

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