It has two centers in Galicia: Vigo, founded in 1917, and A Coruña, created in 1968 (although the oceanographic campaigns in the area of influence of this center date from 1916). The IEO’s mission is research and technological development, including the transfer of knowledge about the sea and its resources. The research of the IEO has diversified to be able to respond to the needs of society for a rational use of the sea and the conservation of the marine environment, thus continuing with its advisory work to the Public Administration and representation of Spain in the majority of international scientific and technological organizations related to the sea and its resources. As with the IIM researchers, some of the doctors from IEO-Vigo and IEO-A Coruña, have been participating in the teaching of the masters and doctorates of the universities that make up this group for years and have been thesis directors PhDs from registered students in Spanish and Portuguese universities (and other European universities). It has the largest fleet of oceanographic research vessels in Spain.