The overriding theory is that it's a bloom of algae brought on by rising water temperatures.
The National Weather Service predicted one of the largest storms on record blasting up the Bering Sea coast. Could this be the first Arctic hurricane?
Biologists blame the Blob of warm water in the Gulf of Alaska for poor sockeye returns that also led to the second lowest commercial harvest in 50 years.
Kachemak Bay has witnessed massive die-offs of sea stars, murres and razor clams. Whats going on?
An MH-60 Jayhawk helicopter crew from Air Station Kodiak flew over the area of an oil spill in Shuyak Strait on Wednesday afternoon, but weather continued to hamper response efforts, the Coast Guard said.
When Jazmin James hadn’t returned to Tununak by Easter Sunday as planned, the family reported him missing. His snowmachine was found on sea ice, partly submerged in water.
"Yesterday we came over to do an assessment of the high-water flood storm," said Northwest Arctic Borough Deputy Director of Public Services Dickie Moto, who grew up in Deering. "They lost a lot of ground on the front and on the back side of town because of the high water and rough seas.
Previously, the dredging started around May and ran through October, but the past three winters it has started earlier and run longer.
As spring walrus hunting season gets underway, residents of St. Lawrence Island talk about sea ice changes and how they affect the village.
Warm water threatens marine habitats off the coast of BC
Not a single humpback whale was seen in the Salish Sea for nearly a hundred years
A species of seaweed has been washing up on beaches across the Caribbean and South Florida.
'Unprecedented numbers' of pink salmon were seen in 2017 and the fish have been spotted again this year.
Last summer while scoping for marine invasive species we found the invasive colonial tunicate, Didemnum vexillum also know as marine vomit.
Scientists say water temperatures are as much as 3 to 4C above the average for this time of year in some areas.
Hundreds of thousands of people have been left without power, after Storm Fiona hit Canada's coastline. Parts of three provinces experienced torrential rain and winds of up to 160km/h (99mph), with trees and powerlines felled and houses washed into the sea.
They are brightly coloured, beautiful and hungry — tropical fish and sea urchins are thriving in southern waters warmed by climate change. But now they are devastating kelp forests already knocked around by marine heatwaves.
Gusts of up to 85mph were recorded in parts of Scotland as Storm Malik swept across the country.
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