History of the Pacific Islands was the first European to sail through the islands and sighted Nui during his expedition in search of Terra Australis. European explorers did not return until two centuries later. In 1819 the island of Funafuti was named Ellice's Island; the name Ellice was applied to all nine islands after the work of English hydrographer Alexander George Findlay (1812–1876). The islands came under Britain's sphere of influence in the late 19th century, when each of the Ellice Islands was declared a British protectorate by Captain Gibson R.N., of HMS "Curacoa", between 9 and 16 October 1892. The Ellice Islands were administered
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.