Blog Tags: Deep-sea Corals
Even more sad news from the Gulf of Mexico, but this time it runs a mile deep. A new study confirms that the oil that likely caused deepwater coral sickness indeed came from the largest accidental oil spill in history, the Deepwater Horizon.
Back in June 2010, deep-sea coral communities showed signs of severe stress and tissue damage after being covered with heavy mucous and brown flocculent material which was believed to be caused by the spill. This type of ill-health in deep sea corals had never before been documented during deep sea research.
The lead author, Helen White from Haverford College, stated, “We would not expect deep-water corals to be impacted from a typical oil spill, but the sheer magnitude of the Deepwater Horizon oil spill and its release at depth makes it very different than a tanker running aground and spilling its contents.”
Deepwater corals can live hundreds of years, and they serve as hot beds for marine biodiversity. The deepwater coral communities are habitat for crabs, shrimp, brittlestars and commercially important fish species like red snapper and grouper. These corals can take a long time to recover from damage and in comparison this would be similar to clear cutting patches of ancient redwood forests in California.
These results are startling in that they show for the first time how harmful deepwater oil drilling is to distant ecosystems even though they are separated from humans by more than 4,000 feet of water. These ancient deepwater corals were likely already living long before the first oil rigs entered the Gulf of Mexico. If we protect them from more drilling and more spilling they could thrive in a world that moves away from oil to smarter and safer sources of energy, like offshore wind.
Oceana is doing its part by filing a legal challenge against new lease sales in the Gulf of Mexico. We do not believe that the government has adequately studied the potential impacts of new drilling or the true extent of the biological impacts from the Deepwater Horizon oil spill. These include the deepwater corals and so many other species that live in the Gulf.
It is also clear that safety measures have not improved to an adequate level. We need your support to continue our efforts to stop offshore drilling and protect important deep sea habitats, dolphins and the thousands of species that are still struggling from oil pollution in the Gulf of Mexico. Go to stopthedrill.org to get involved.
Fantastic news from the international negotiations we told you about last week: the talks concluded on Friday with conservation measures that will protect more than 16.1 million square miles of seafloor habitat in the North Pacific Ocean from bottom trawling and other bottom contact gear.
Delegates also concluded negotiations on a new treaty. Once signed and ratified, it will establish a new fishery management organization charged with sustainably managing North Pacific Ocean fisheries.
Bottom trawls are massive weighted nets that drag along the ocean floor, destroying anything in their path, including ancient coral forests, gardens of anemones and entire fields of sea sponges. Today’s bottom trawlers go deeper and farther from shore than they could ever reach before, into high seas areas populated with slow-growing deep-sea fish and corals that are especially slow to recover from trawling. Nets can be 200 feet wide and 40 feet high, weighing as much as 1,000 pounds and reaching depths of more than 5,000 feet.
Here’s your daily expedition update from Oceana’s senior campaign communications manager Dustin Cranor:
The Oceana Latitude faced rougher seas today as it reached The Florida Middle Grounds off the West Florida Shelf in the northeastern Gulf of Mexico, roughly 100 miles from shore. This is another area that was apparently spared the impacts of oil drilling, at least this time.
Oceana chose this location for its next diving operation because it’s a very important and popular fishing area sitting amongst a complex and vulnerable seafloor habitat, including deep sea corals. Although it’s a popular fishing area, there is little information about the seafloor itself, due to its distance from shore and depth from the surface.
Our first dive site was nearly 100 feet deep and provided a great opportunity to document large hogfish and angel fish as well as sponges and sea fans.