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NOAA: Average-sized dead zone likely in Gulf

NEW ORLEANS (AP) An average “dead zone” is likely in the Gulf of Mexico, where a large area of water holding too little oxygen to keep marine animals alive forms every summer, the National Oceanic and Atmospheric Administration said Thursday. A hurricane or tropical storm in the weeks before the July measurement cruise could shrink that considerably by stirring up the water and mixing in oxygen, NOAA noted. It said its analysis of five university models indicates that this summer’s low-oxygen, or hypoxic, area will cover about 4,880 square miles (12,600 square kilometers). That’s close to the five-year average of 5,400 square miles (14,000 square kilometers), NOAA said. It’s also bigger than the nation of Vanuatu, nearly double the size of the state of Delaware and 2.5 times a goal set in 2001 by the Gulf of Mexico Hypoxia Task Force.

The Last Creature You d Expect Left Mysterious Trails on the Ocean Floor

Guess Which Creature Made Mysterious Trails on the Ocean Floor Something with no legs, no feet and no skeleton is crawling around down there, scientists say. Video Sponge spicule trails on the Arctic seafloor, captured by the research icebreaker Polarstern in 2016. Video by AWI OFOBS TEAM, PS101 By Marion Renault April 30, 2021 Deep-sea sponges are not known for their mobility. After all, they lack muscles, nervous systems and organs. And forget about fins or feet for traveling the Arctic seafloor. But new research suggests these ancient life-forms can and do, indeed, get around and far more than marine biologists believed. By studying hundreds of photos and videos of Arctic sponges, scientists from Germany’s Max Planck Institute of Marine Microbiology discovered a vast web of trails several feet long left in the creatures’ roaming wake.

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