There are also hydrothermal fluids, which come from openings at the bottom of the ocean, NOAA says. Ocean water heats up from magma at the Earth’s core when it seeps into cracks in the seafloor.

We also dropped instruments that sank to the bottom and recorded the signals from our transmitter, ... Buried at Sea. Records of fresh water being found offshore go as far back as the 1800s.

Explore how deep sea water can be transformed into drinkable freshwater, potentially addressing the global water crisis. This ...

About 2,000 feet beneath the ocean’s surface, in the dark stillness off the coast of California, a concrete sphere the size of a small house will soon have its moment. Its walls must resist ...

One would never imagine that huge volumes of freshwater exist under the saline ocean. In the 1960s, says a media report, the U.S. Geological Survey drilled boreholes off the New Jersey coast and ...

It’s known as Pythia’s Oasis, and it’s a spring of almost-fresh water most welling up from under the ocean floor through a fault called the Cascadia Subduction Zone.

The giant freshwater stingray may be the world’s largest freshwater fish. It’s also cloaked in mystery. No one is sure how many giant stingrays are left, which habitats they prefer, or even if ...

We are all connected to the ocean. In partnership with the Canadian Ocean Literacy Coalition, Canadian Geographic is reframing the conversation around ocean conservation, highlighting the ...

These fish have two fused teeth on both the top and bottom that act a bit like a beak. They use these teeth to crush or scrape their prey. There are 191 species of Tetraodontidae pufferfish.

The US Army Corps of Engineers is planning to barge 36 million gallons of fresh water daily into the lower Mississippi River near New Orleans as an expected saltwater intrusion from the Gulf of ...