News
Canadian Researchers Discover Cold-Water Coral Reef in Greenland
By sheer coincidence, Canadian researchers have discovered a reef of living cold-water corals in southern Greenland.
The first ever Greenlandic reef is located in southwest Greenland and was formed by cold-water corals with hard limestone skeletons. There are several species of coral in Greenland, but this is the first time that an actual reef has been found.
In the tropics, reefs are popular tourist destination for divers, but there is little prospect of Greenland becoming a similar diving hotspot. The newly discovered living reef is located off Cape Desolation south of Ivittuut, and lies at a depth of 900 metres in a spot with very strong currents, making it difficult to reach. This also means that so far little is known about the reef itself and what lives on it.
The reef was discovered by accident when a Canadian research vessel needed to take some water samples. When the ship sent the measuring instruments down to a depth of 900 metres, they came back up completely smashed. Fortunately there were several pieces of broken coral branches on the instrument that showed what was responsible.
“At first the researchers were swearing and cursing at the smashed equipment and were just about to throw the pieces of coral back into the sea, when luckily they realized what they were holding,” says PhD student Helle Jørgensbye, DTU Aqua, who does research into life at the bottom of the west Greenland waters.
Another Canadian research vessel returned to the site last fall to try and lower a camera down onto the reef to explore it close up. The coral reef is on the continental shelf itself where it is very steep and where there are strong currents.
“We got some photos eventually, although we almost lost them at the bottom of the ocean as the camera got stuck fast somewhere down in the depths. Luckily we managed to get it loose again and back up to the surface,” says Helle Jørgensbye.
“It’s been known for many years that coral reefs have existed in Norway and Iceland and there is a lot of research on the Norwegian reefs, but not a great deal is known about Greenland. In Norway, the reefs grow up to 30 metres high and several kilometres long. The great Norwegian reefs are over 8,000 years old, which means that they probably started to grow after the ice disappeared after the last ice age. The Greenlandic reef is probably smaller, and we still don’t know how old it is,” says Helle Jørgensbye, expressing the hope that at some point this will be investigated more closely.
Read more on this story here.
Source: www.sciencedaily.com
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Gemma and Ian chat to Dawn Kernagis. Dawn joined DEEP in 2023 as the Director of Scientific Research. DEEP is an ocean technology and exploration company with a mission to ‘Make Humans Aquatic.’ DEEP’s undersea habitat and submersible systems, combined with multi-phased diver and human performance training, will create the next evolution of subsea science, research, and exploration capabilities. Dawn is a NASA-trained NEEMO Aquanaut, Explorer’s Club Fellow and Women Divers Hall of Fame Inductee and who is also tasked to establish DEEP’s first US presence in North Carolina. Dawn has also been a diver with numerous underwater exploration, research, and conservation projects since 1993, including the mapping and record-setting exploration of some of the deepest underwater caves in the world.
https://www.linkedin.com/in/dawn-kernagis-995383152/
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