Limnology and Oceanography, Vol. 54, No. 4 (Jul., 2009), pp. 1306-1322 (17 pages) We studied three-dimensional distribution patterns of temperature, phyto- and zooplankton, and fish in the large, ...

The great white shark, the hammerhead and other “pelagic” sharks owe their status as the ocean’s top predators to a sustained bout of global warming 93 million years ago, a study has found.