As a part of a 2021 North Atlantic Stepping Stones expedition, what is named a probably “unknown” or “undescribed” pink jellyfish within the genus Poralia was captured on digital camera. The disk-shaped pink jellyfish was discovered floating practically 2,300 ft under the floor.
An “undescribed” species is the time period scientists use to categorise a creature that has by no means acquired a particular identify in a proper scientific publication and is, subsequently, beforehand unknown to scientists.
Quinn Girasek, an intern and Nationwide Oceanic and Atmospheric Administration (NOAA) Hollings Scholar with the NOAA Ocean Exploration group describes the discover as a part of her function annotating the water column dive that came about in late July.
“As a Hollings intern, I’m conducting analysis to additional our understanding of beforehand unexplored ocean habitats,” she explains. “My mission this summer season focuses on the abundance of organisms inside the mesopelagic, or twilight zone (200 to 1,000 meters/ 656 to three,281 ft depth) within the Atlantic Ocean across the Gulf Stream and inside the deep scattering layer.”
The pink jellyfish is without doubt one of the species that Girasek cataloged as a part of her analysis. This lovely pink creature within the genus Poralia is described as one which may be a beforehand unknown species and was seen in the course of the third transect of Dive 20 of the 2021 North Atlantic Stepping Stones expedition, at a depth of 700 meters (2,297 ft).
“General, quite a lot of animals had been seen, like ctenophores, cnidarians, crustaceans, and Actinopterygii (ray-finned fishes). We additionally noticed a number of undescribed households and potential new species,” she continues.
Within the picture under, the remotely operated automobile (ROV) Deep Discoverer is proven gathering the doubtless new species of jellyfish, which additionally provides a way of scale to the creature. For reference, the ROV is 10 ft lengthy, 6.5 ft extensive, and eight.5 ft tall.
Deep Discoverer is able to diving to a depth of three.7 miles (6,000 meters) and may seize high-definition video and makes use of a set of 20 LED lights to fireside 150,000 lumens of sunshine into the darkness of the ocean’s depths.
The ultimate dive of the 2021 North Atlantic Stepping Stones expedition was devoted to the exploration of the water column inside Hydrographer Canyon by way of two sequence of transects. The primary sequence concerned transects at depths of 300, 500, 700, and 900 meters (984, 1,640, 2,297, and a pair of,953 ft) and the second sequence began with a transect inside the bathypelagic or midnight zone of the ocean at 1,200 meters (3,937 ft) depth and was adopted by a transect at a depth of 630 meters (2,067 ft), inside the space’s “deep scattering layer” (DSL). The DSL is a area within the water column the place there’s such a excessive density of marine organisms that they generate their very own sonar sign.
The “deep scattering layer” is a time period utilized by these utilizing energetic acoustics within the open ocean as a phenomenon that happens between about 400 and 600 meters (1,312 to 1,969 ft) depth in our geographic area of examine. As described by NOAA Hollings Undergraduate Scholar Herbert Leavitt, sometimes this layer is seen when the sound waves come into contact with a excessive density of mesopelagic fish or different organisms that stay at depth in the course of the day and migrate in the direction of the floor at night time to feed.
Many different creatures had been noticed in the course of the expedition, and whereas the pink jellyfish is the one one which is named out as “undescribed” or undiscovered, there are a number of others that may be seen intimately in photographs and video from the NOAA.
Picture and video credit: Video and pictures courtesy of NOAA Ocean Exploration, 2021 North Atlantic Stepping Stones: New England and Nook Rise Seamounts.