Global warming brings crab threat to Antarctica
The worrisome intruder is a bright-red deep-sea predator that previously had been spotted only in the Ross Sea, on the other side of West Antarctica.
Taxonomists identified the crustacean just five years ago, bestowing it with the lengthy monicker of Neolithodes yaldwyni Ahyong and Dawson and placing it among the 121 species of king crab.
It is known as an “ecosystem engineer” because it digs into the sea floor to feast on worms and other tiny animals, an activity that in large numbers can have repercussions across the marine food web.
A team led by Laura Grange of the University of Hawaii at Manoa lowered a remote-controlled scoutcraft as part of a long-term probe into biodiversity in the waters off the Antarctic peninsula.
They looked at Palmer Deep, a mud-floored basin in the Weddell Sea located 120 kilometres (75 miles) from the edge of the continental shelf.
The robot’s camera, trailed over two kilometres (1.2 miles), spotted 42 crabs, all of them at depths lower than 850 metres (2,760 feet), where the water was a relatively balmy 1.4 degrees Celsius (34.5 degrees Fahrenheit).
By extrapolation, the crab population in Palmer’s deep — an area measuring 14 kms (nine miles) long by eight kms (five miles) wide — could be more than 1.5 million, says Grange.
That density is the same as commercial crab fisheries in Alaska and the British South Atlantic island of South Georgia.
The images gave a glimpse of the kind of damage caused by the foraging crustaceans. – Yahoo.com
Watch what will soon wash up from the dying seas. A deadly brew is fermenting and will soon surface. Your coastlines will become stagnated with the death toll.
Learn who is against the nations: Jeremiah 51:25 “Look, I am against you, devastating mountain— [this is] the LORD’s declaration— you devastate the whole earth. I will stretch out My hand against you, roll you down from the cliffs, and turn you into a burned out mountain.”