MARIANAS, or Maranhas, a tribe of South American Indians on the river Jutahy, north-western Brazil.
Marianas are also found on the upper reaches of the Putumayo across to the Yapura.
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.