On the Pacific coast of the United States, a swarm of donut-sized aliens wash up on beaches, leaving a temporary mat of blue debris.
Julia Parrish, a marine ecologist at the University of Washington, says, “Most people experience them as a strange, off-white, crunch of old toenail color when walking on the beach.” They don’t know they’re actually walking through billions of living things.”
Scientists say these relationships are more hypothetical than proven fact, but the invasion could be a sign of ocean warming, or a large-scale climate pattern known as El Niño. I have.
Countless creatures, each clump up to about 80 mm wide, wash up on a single beach within a few days.bellera bellera), or sailors of the wind, linked together. Such hydrozoans form a subgroup of the phylum Cnidaria, a phylum that includes jellyfish and corals. For Berera, each apparent ‘jellyfish’ is a colony of many individual polyps tethered to a ‘float’ built together. A disk of blue-rimmed tentacles covered with a transparent “sail”. Colony members use stingers to capture plankton that feed their common digestive system.
Velellas spend most of their lives in faraway oceans, with many companions. Stephen Haddock, a marine biologist at the Monterey Bay Aquarium Research Institute in California, said:
However, around April each year, the winds bend along the Pacific coast of the United States and push toward the coast. And the sailors at By the Wind live up to their nickname, Where the Wind Goes, Where the Wind Goes, and so does Bellera. “Once jellyfish are in sailing mode, they have no way to steer. They have no way to control their movement, to accelerate or slow down,” he says. “They are just at the mercy of the wind.”
Oddly enough, wind changes occur every year, but not every Berera flood. Temperature may be the key, according to Parish’s research several years ago. The study found that berreras were more likely to be stranded in large numbers when the sea was warmer than usual in the preceding winter. I’m not sure if it does, or if warm oceans mean fine-tuning ecosystems to benefit living things.
Two different phenomena have warmed the oceans in recent years. One is El Niño, which starts in the equatorial Pacific and tends to bring wet weather to the southern United States and dry weather to the northern United States (meteorologists predict that El Niño will likely begin in the coming months). increase). Another is a marine heatwave. This occurs when a warm water cap forms and persists into the ocean. The massive heat wave that hit the Pacific Northeast in 2014 lasted him two years. Scientists are also tracking a marine heatwave in the region from January 2022 onwards.
Parrish and her colleagues discovered a link between the Bellera stranding and ocean warming events in data collected by the Coastal Observation and Seabird Survey Team (COASST), a community science program she runs. Although it relies on local residents who regularly visit nearby beaches, and although the project focuses on seabirds, enough participants reported Berera washes to facilitate analysis.
Parrish and Haddock, who run a website called JellyWatch, encourage people to report sightings of Bellera Beach to a crowdsourced science project. They also recommend a more popular program called iNaturalist. According to Parrish and Haddock, the more data available to such programs, the more scientists will be able to figure out what’s going on with these strange creatures.
From his research, Haddock says he doesn’t think this year’s events or the recent strandings are unusual, and that newspaper clippings from the early 1900s report a herd of berrera washing up on a beach. added. “This kind of event is essentially eternal,” he says.
