Ocean Temperatures Faithfully Recorded In Mother-Of-Pearl
Mother-of-pearl or nacre (pronounced nay-ker), the lustrous, tough-as-nails biomineral that lines some seashells, has been shown to be a faithful record of ancient ocean temperature. Writing online Thursday, Dec. 15, in the journal Earth and Planetary Science Letters, a team led by University of Wisconsin-Madison physics Professor Pupa Gilbert describes studies of the physical attributes of nacre in modern and fossil shells showing that the biomineral provides an accurate record of temperature as the material is formed, layer upon layer, in a mollusk.
Six New Species Discovered Deep Underwater At Thermal Vent In Indian Ocean
A geological expedition to the southwest Indian Ocean in November 2011 made a highly unusual find, at least insofar as its own stated goals: six new species of underwater creatures that had never been seen before. A team of researchers, led by Jon Copley of the University of Southampton used a remotely operated vehicle to explore the area the size of a football field at a site called Longqi, or Dragon’s Breath, which is about 1,200 miles southeast of Madagascar and about 2 miles below the ocean surface. Longqi is home to a number of hydrothermal vents, where heat escaping from below the ocean floor attracts a diverse range of deep sea creatures.