RMS Titanic difficulty of finding and reaching a wreck that lies over below the surface, in a location where the water pressure is over . A number of expeditions were mounted to find "Titanic" but it was not until 1 September 1985 that a Franco-American expedition led by Robert Ballard succeeded. The team discovered that "Titanic" had in fact split apart, probably near or at the surface, before sinking to the seabed. The separated bow and stern sections lie about a third of a mile (0.6 km) apart in Titanic Canyon off the coast of Newfoundland. They are located from the inaccurate
Geology of the Pacific Ocean . The Pacific Ocean developed from the Panthalassa, a vast global ocean, following the breakup of the supercontinent Pangaea in the Mesozoic Era, gradually forming Gondwana and Laurasia, which in turn divided. There is no firm date for when the changeover occurred, as the replacement of the sea bed is a continuous process, though reconstruction maps often change the name from Panthalassic to Pacific around the time the Atlantic Ocean began to open. The Panthalassic Ocean first opened around 750 million years ago at the breakup of Rodinia, but the oldest Pacific Ocean floor is only around 180 Ma old.