The following islands may be classified as oceanic, but not with any of the three main divisions: the Bonin Islands, north of the Marianas, belonging to Japan; Lord Howe and Norfolk Islands (to New South Wales); Easter Island (to Chile); the Galapagos Islands (to Ecuador).
As to the distribution of coral reefs within the Pacific area, in Micronesia the northern Marianas (volcanic) are without reefs, which, however, are well developed in the south.
Magellan reached the " Ladrones " (Marianas) in 1521, and voyaged thence to the Philippines, where he was killed in a local war.
In 1767 Samuel Wallis worked through the central part of the Paumotus, and visited Tahiti and the Marianas, while his companion Philip Carteret discovered Pitcairn, and visited Santa Cruz, the Solomons and New Pomerania.
In1818-1819the French navigator Louis Claude Desaulses de Freycinet ranged from New Guinea through the Marianas to Hawaii.