The Mar Océano Company is made up of Marine Corps personnel serving in the Royal Guard.
The Mar Océano Company is part of the Military Honors Group of the Royal Guard along with the Army's Monteros de Espinosa Company and the Air Force's Plus Ultra Squadron.
Its main mission is to provide protection and to honor His Majesty the King, members of the Royal Household, foreign Heads of State on official visits to Spain and the presentation of credential of new ambassadors.
It is also tasked with the operational readiness of the Royal Guard's Diving Unit.
In order to effectively fulfill its mission, the Mar Océano Company is continuously involved in training and improvement activities.
The Mar Océano Company trains with other elements from the other Services (Army and Air Force) in techniques related to skiing, cross-country marches, mountain climbing, urban warfare, personal defense, sniper drills, organization of check-points, escort of convoys, parachuting, etc.
The Company also conducts regular exercises and specific MC training activities like firing, tactics, topography, drills with craft and helicopters, etc.