They discovered near Antarctica a new sea creature with 20 arms

They discovered near Antarctica a new sea creature with 20 arms

The appearance of new species is surrounded by unforeseen events, imponderables and uncalculated surprises that make us review the known. Some of this has been experienced by researchers scouring the ocean near the Antarctica and that they discovered a new species that looks disturbing in the photos, and that received the name of a fruit.

The Antarctic feather star is a sea creature with ’20 arms’, some irregular, others feathery, and in total can measure up to 20 centimeters long.“, as reported Greg Rouse, Professor of Marine Biology Scripps Institute of Oceanography in the University of California in the United States, who co-authored the paper on the find with Emily McLaughlin and Nerid Wilson. The specialists published their research in Invertebrate Systematics.

“If you get close to their body, a little bump at the apex of all those arms, it resembles the size and shape of a strawberry or strawberry,” Rouse explained.

The circular protrusions in the body of the star are where cirrus clouds should be, the smaller, tentacle-like strings that protrude from the base, “but they were removed to show the attachment points,” Rouse said. We’ve removed a bunch of cirrus so they can see the parts they’re attached to, and that’s what a strawberry looks like.”

He added that cirrus clouds have “tiny claws at the end that are used to attach to the bottom of the seafloor.” The so-called arms are the longest, feather-like parts of the Antarctic strawberry feather star. “They are usually scattered,” Rouse explained, “and they help with the mobility of the creature.”

The formal name of the new species is Promachocrinus fragarius. It belongs to the class Crinoidea, which includes starfish, sea urchins, sand dollars and sea cucumbers, and is a type of feather star, hence the less formal name “Antarctic feather star”. Fragarius derives from the Latin word “fragum”, meaning strawberry.

There was originally only one species in the Antarctic feather star group: Promachocrinus kerguelensis.Rouse said. But by dragging a net across the Southern Ocean in search of more samples of these creatures, the team of scientists from Australia and the US identified Four new species which may belong to the group of Antarctic feathered stars.

The Antarctic strawberry feather star stands out in particular for the number of “arms” it possesses. “Most of them have 10 arms,” Rouse said. The typical position of a feather star is to have the “arms” extended and upward, while cirrus clouds point downwards.

With this discovery, the researchers could add eight species under the category of Antarctic feather stars, adding the four new ones and “resurrecting” previously discovered animals that were initially believed to be of their own species.

“So we went from one species with 20 arms to now eight species: six with 20 arms and two with 10 under the name Promachocrinus,” Rouse said. According to the research, the Antarctic strawberry feather star was found somewhere between 65 and about 1170 meters below the surface.

The researchers acknowledged in their paper the “otherworldly appearance of the swimming movements of feather stars. Finding new species in general is not a rare phenomenon,” Rouse said. Our laboratory names between 10 and 15 species per year. We found many. The problem is the amount of work involved in identifying them,” he concluded.


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