DNA analysis recently confirmed that Woods Hole Oceanographic Institution (WHOI) scientists and their collaborators at OceanX, the University of Connecticut (UConn), and NASA’s Jet Propulsion Laboratory (JPL) discovered two new species of deep-sea corals during a September 2018 expedition in the Northeast Canyons and Seamounts National Monument, located about 100 miles from the Northeast U.S. coast.
The research team was led by deep-sea biologist Tim Shank of WHOI and included co-PIs Taylor Heyl (WHOI), Rachel O’Neill (UConn), and John Leichty (JPL). Utilizing OceanX’s research and exploration vessel Alucia, the team explored and surveyed several of the unique deep-sea habitats in the monument, which includes three underwater canyons deeper than the Grand Canyon.
During the two-week expedition, the scientists collected a total of 29 coral samples in Lydonia Canyon at depths between 369 meters (1,211 feet) and 903 meters (2,963 feet) using the submarine Nadir. These were the first human-occupied submersible dives in this canyon since 1982 and only the third deep-submergence mission to Lydonia Canyon.
“Through ongoing genetic barcoding, we have identified at least two corals so far that represent genetically different species,” Shank said. “They don’t show sufficient genetic similarity to be any species that is currently known in the world’s repository for DNA sequences.”
According to Heyl, the two likely new species found in Lydonia Canyon are bubblegum corals, which she described as soft, deep-water corals, “with bundles of polyps that resemble wads of bubblegum along their branches.”
“We didn’t expect to find bubblegum corals there at all, since they haven’t been found in any of the neighboring canyons,” Shank said. “We found pink, red, and white bubblegum corals thriving there.”
“We observed a high diversity of other corals—at least 24 species—on the seafloor and are discovering more through genetic analyses,” he added.
Shank noted that coral species deep in the canyon at more than 900 meters (2,953 feet) below the surface were very different from those found in shallower waters. In total, the team collected some 200 samples of corals, sponges, and other marine life during the expedition’s three submersible dives.
“We’re still analyzing the data,” he noted. “But we found surprising patterns of species diversity at different depths and among the different canyons in the monument.”
Corals found at these depths grow at an extremely slow pace: One that is a foot tall could be as much as 500 years old. Deep-water corals around the world also provide the framework to support entire ecosystems that contain more than 2,500 species living on and around them, including brittle stars, squat lobster crabs, and sea lily crinoids.
In addition, the team tested a new universal barcode for invertebrates during the expedition. Barcoding is a technique that uses a specific segment of an organism’s DNA to identify different species at the genetic level, rather than by analyzing an organisms physical characteristics. UConn’s O’Neill and her team were able to validate the effectiveness of the new barcode by distinguishing all of the different salp species present in a single, commingled sample. Salps are a gelatinous, free-swimming animal common to the open ocean that may play an important role in Earth’s climate system by consuming carbon near the surface and excreting it in pellets that sink into the deep ocean.
The monument was created by President Barack Obama in 2016 and is the first and only national marine monument in the Atlantic Ocean. However, it is currently under threat of losing its protected status.
“The Northeast Canyons represent some of the most unique and biodiverse habitats in the Atlantic Ocean, and exploring and understanding these canyons is critical to creating awareness for and protecting them,” said Vincent Pieribone, Vice Chairman, OceanX. “We are thrilled to learn with our partners at WHOI, JPL, UConn and Bloomberg Philanthropies that this mission uncovered new species of coral. These discoveries will help move us toward a better understanding of our oceans, our planet’s most important and most under-examined natural resource.”
The expedition was made possible through the Bloomberg-OceanX partnership and pledge of a combined $185 million over the next four years to facilitate ocean exploration and conservation around the world. Through the partnership, Bloomberg Philanthropies and OceanX aim to create a critical platform to increase the world’s collective understanding of and engagement in our oceans.
Find out more at www.whoi.edu.
Photo Gallery: Dive Fest Barbados
In our Gallery feature, we let the photos tell the story… Each Gallery showcases a selection of outstanding images on a chosen theme, taken by our Underwater Photography Editor Nick and Deputy Editor Caroline of Frogfish Photography. This time they reflect on their visits to the Caribbean Island of Barbados for the annual Dive Fest celebrations.
Dive Fest Barbados is a week of celebrating the marine life, diving and snorkeling this idyllic island has to offer. There are activities organised each day for all those that attend that include wreck diving, marine conservation, learning to dive, snorkeling and one an unusual dive for us – riding a submarine to the bottom of the Caribbean Sea! Dive Fest Barbados allows divers to get the very best out of a trip here, with plenty of diving, but also to sample the unique atmosphere, mouth-watering food and drink, stunning scenery and beautiful beaches.
For more images from Barbados and around the world, visit the Frogfish Photography website by clicking here.
Video Series: The CCMI Reef Lectures – Part 4 (Watch Video)
Introduced by Jeff Goodman
Never before since human beings have had major influence over our earths climate and environments, have we come to so close to the brink of global disaster for our seas and marine life. We need to act now if we are not going to crash headlong into irreversible scenarios.
A good start to this is understanding how the marine environment works and what it means to our own continued survival. We can only do this by listening and talking to those with the experience and knowledge to guide us in the right direction.
CCMI (Central Caribbean Marine Institute) are hosting an annual Reef Lecture series that is open to the general public and Scubaverse will be sharing those lectures over the coming months.
Part 4: Stop Whining! Life as an Ocean Ambassador; Ellen Cuylaerts
Ellen Cuylaerts shares her insights on how to act, practice what you preach and use your voice to contribute to constructive change. Ellen is a wildlife and underwater photographer and chooses to take images of subjects that are hard to encounter like harp seal pups, polar bears, orcas, beluga whales and sharks, to name a few. By telling the stories about their environment and the challenges they face, she raises awareness about the effect of climate change on arctic species, the cruel act of shark finning and keeping marine mammals in captivity.
During this seminar, Ellen will take you on a virtual trip and show you the stories behind the shots: how to get there, how to prepare, how to create the most chances to come home with a shot, and how to never give up!
Ellen Cuylaerts is an ocean advocate, underwater & wildlife photographer, explorer, and public speaker.
For more information about the CCMI click here.
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For this week’s competition, we’ve teamed up with our good friends at Liquid Sports to give away a Bigblue AL-1200NP Dive...
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For this week’s competition, we’ve teamed up with our good friends at CPS Partnership to give away a Tovatec T3500S Rechargeable Dive Light...
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For this week’s competition, we’ve teamed up with our good friends at fourth element to give away one of their NEW Arctic...
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For this week’s competition, we’ve teamed up with our good friends at Northern Diver to give away one of their NDB5 Holdall...
Sharks Bay Umbi Diving Village is a Bedouin-owned resort with stunning views and a lovely private beach. It is ideal for divers as everything is onsite including the resort's jetty, dive centre and house reef. The warm hospitality makes for a diving holiday like no other. There is an excellent seafood restaurent and beach bar onsite, and with the enormous diversity of the Sharm El Sheikh dive sites and the surrounding areas of the South Sinai, there really is something for every level of diver to enjoy.More Less
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