Strange ‘sea pickles’ keep washing ashore in the Pacific Northwest — and scientists are baffled
There are strange sea creatures known as the “gherkin” invading the Pacific Northwest.
These gelatinous and slightly translucent bodies, called pyrosomes were seen together, sometimes thousands, near the northern shore of California to southeastern Alaska – obstructing fishing and lava nets on beaches according to the National Oceanic and Atmospheric Administration.
Experts say that this year creatures appear in large numbers outside the normal range of species.
More recently, the NBC Bay Area reported that sea dwellers have caused a stir in Monterey Bay, frustrating fishermen try to take salmon and shrimp.
What are pyrosomes, where do they come from, and why are they growing?
[Australian scientists have searched for deep creatures and took their nightmares instead]
NOAA Fisheries they described it this way:
The pyrosomes are pelagic tunics, which are part of Chordata, a cutting edge that includes humans. It is hard and sticky to the touch, with small protuberances pronounced. Inside the wall of this gelatinous tube that grows up to 60 cm, individual zooids are packed together.
These zooids have incurrente and excess siphon and the use of eyelashes for pumping water for feeding, breathing and movement. Using a network of mucus, they filter the water for small planktonic microorganisms.
Pyrosomes are known to accumulate in large clusters on the surface and bioluminesce zooides to create beautiful light screens.
Experts say that pyrosomes are found all over the world, usually in warm tropical waters in the sea away.
Ric Brodeur, a research biologist at the NOAA’s Northwest Fisheries Science Center in Newport, Oregon, said that the Oregon Beachcombers walked the beaches for decades but began making reports of washed-up pyhosomes on beaches only in the past. some months.
It was also at sea on research cruises since the 1980s and saw its first pyrosome in 2014. It is believed that great abundance is related to unusually warm oceanic conditions along the coastline that sees the natural habitat of pyrosomes .
Brodeur said it is too early to say if pyrosomes become permanent residents in the Pacific Northwest because the ocean could return to colder conditions.
“We will wait and see how it goes, but of course, this is not a good sign for the ecosystem to have these creatures out there instead of the normal prey of fish and shellfish, most of our fish, birds and mammals off our coast Are accustomed to, “he said.
“A city five minutes away from a Columbia research pipeline at the end of May generated approximately 60,000 pirosomes,” said the NOAA Northwest Science Center Fishery in a blog post. “Scientists have spent hours sorting the massive done to find the rare fish they were meant for.”
Researchers at NOAA Fisheries and researchers at Oregon State University and the University of Oregon studied these more marine creatures.