The Weekly Dive Vol. 69

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

Entangled fishing gear hinders whales’ diving and swimming. A tagging study looking at how entanglement in fishing gear affects whales found that it can cause slow death by significantly depleting energy and harming their ability to eat and migrate. [Science Daily]  

Gulf of Mexico sea turtles forage in dangerous habitat. The critically endangered Kemp’s ridley sea turtle was found to favor feeding sites in the parts of the Gulf that are the most-damaged by high levels of fishing, oil spills, and oxygen depletion. [The Los Angeles Times] 

California marine plastic pollution bill dies without a vote. The Assembly bill would have required manufacturers to reduce coastal plastic pollution. It would have been the first such legislation in the US, though similar measures extending responsibility to producers have been implemented in multiple European nations. [The Washington Post]

Shipwrecks likely to leak oil identified. A study was conducted by NOAA of 20,000 sunken ships, which can carry full fuel tanks with them to the seafloor. Clean ups were recommended for those wrecks identified as posing a high risk of causing oil pollution. [Discovery News]  

Analysis of century-old ocean data provides new evidence for climate change. During voyages by the HMS Challenger from 1872 to 1876, the crew took extensive ocean temperature measurements. Researchers recovered the data, calculated a degree of uncertainty, and combined it with modern datasets, and found that it corroborated evidence of warming. [Science Daily]

Largest deep sea methane cold seep discovered. In the deep North Atlantic, scientists found perhaps the world’s largest methane cold seep – an ecosystem in which methane-rich fluid trickles from the seafloor. The organisms here are called extremophiles and rely on chemosynthesis to live. [Science Daily] 


Photos by: 
Expedition to the Deep Slope 2007, NOAA-OE via Wikimedia Commons, Public Domain; NOAA Photo Library via Wikimedia Commons, Public Domain; 
U.S. Fish and Wildlife Service via Wikimedia Commons, Public Domain; Serena Livingston / via Wikimedia Commons, Creative Commons License; Provincie Limburg/ Alf Mertens (Project Schone Maas Limburg) via Wikimedia Commons, Creative Commons License; "The Report of the Scientific Results of the Exploring Voyage of HMS Challenger during the years 1873–1876" via Wikimedia Commons, Public Domain.

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