Deepest scientific ocean drilling sheds light on Japan’s next great earthquake

The deep sea scientific drilling vessel Chikyu, which in 2018 performed the deepest drilling of a subduction zone earthquake fault. Credit: Satoshi Kaya/FlickR Scientists who drilled deeper into an undersea earthquake fault than ever before have found that the tectonic stress in Japan’s Nankai subduction zone is less than expected, according to a study from … Read more

Ocean scientists measure sediment plume stirred up by deep-sea-mining vehicle

Credit: Unsplash/CC0 Public Domain What will be the impact to the ocean if humans are to mine the deep sea? It’s a question that’s gaining urgency as interest in marine minerals has grown. The ocean’s deep-sea bed is scattered with ancient, potato-sized rocks “polymetallic nodules” that contain nickel and cobalt—minerals that are in high demand … Read more

Ever heard of ocean forests? They’re larger than the Amazon and more productive than we thought

by Albert Pessarrodona Silvestre, Karen Filbee-Dexter and Thomas Wernberg, The Conversation Credit: Shutterstock Amazon, Borneo, Congo, Daintree. We know the names of many of the world’s largest or most famous rainforests. And many of us know about the world’s largest span of forests, the boreal forests stretching from Russia to Canada. But how many of … Read more

How marine predators find food hotspots in open ocean ‘deserts’

The striped marlin (Kajikia audax) is a species of billfish that is overfished in the North Pacific. A new study co-led by WHOI finds that marine predators, like the striped marlin, aggregate in anticyclonic, clockwise-rotating ocean eddies to feed. Credit: Pat Ford Photography A new study led by scientists at Woods Hole Oceanographic Institution (WHOI) … Read more

Scientists take a deep dive into how sharks use the ocean

Samantha Andrzejaczek, a postdoctoral research fellow at Stanford’s Hopkins Marine Station, (second from right) tagging a tiger shark. Credit: Alex Kydd Using sophisticated electronic tags, scientists have assembled a large biologging dataset to garner comparative insights on how sharks, rays, and skates—also known as “elasmobranchs”—use the ocean depths. While some species spend their entire lives … Read more

Scientists identify potential bioindicators for monitoring plastic pollution in North Pacific Ocean

A green sea turtle basking on one of the beaches in Hawaii. These marine species could serve as a potential bioindicator for plastic pollution in the North Pacific Ocean. Credit: J. Lynch/NIST With an estimated 8 million metric tons of plastic waste escaping to our oceans each year, adversely plastic pollution affects the environment, climate, … Read more

History of DDT ocean dumping off LA coast even worse than expected, EPA finds

Credit: CC0 Public Domain After an exhaustive historical investigation into the barrels of DDT waste reportedly dumped decades ago near Catalina Island, federal regulators concluded that the toxic pollution in the deep ocean could be far worse—and far more sweeping—than what anticipated scientists. In internal memos made public recently, officials from the US Environmental Protection … Read more

World’s toughest turtle? Survivor among 8 returned to ocean

Bill Deerr, a leader of Sea Turtle Recovery, holds Titan, a rehabilitated turtle before releasing it back into the ocean in Point Pleasant Beach, NJ on Aug. 2, 2022. Titan survived being gashed by a boat propeller, having part of a flipper bitten off by a shark, and was being attacked by a different shark … Read more

Asphalt identified as source for non-degradable carbon and sulfur compounds in the ocean

by Ulrike Prange, MARUM – Zentrum für Marine Umweltwissenschaften an der Universität Bremen Environmental Science & Technology (2022). DOI: 10.1021/acs.est.2c01123″ width=”500″ height=”273″/> Credit: Environmental Science & Technology (2022). DOI: 10.1021/acs.est.2c01123 When oil is released into the sea, it is not always the result of an oil spill. There are naturally hydrocarbon seeps on the ocean … Read more

An ocean of galaxies awaits: New COMAP radio survey

COMAP’s radio dish at Owens Valley Radio Observatory. Credit: OVRO/Caltech Sometime around 400 million years after the birth of our universe, the first stars began to form. The universe’s so-called dark ages came to an end and a new light-filled era began. More and more galaxies began to take shape and served as factories for … Read more