The Navy Seals started in what year?

Navy SEALs specifically or UDTs as well?

In 1962, President John Kennedy ordered the United States military to begin the formation and training of units specialized in unconventional warfare. The Army formed the Green Berets and the Navy formed SEAL Teams One and Two.These new units were formed entirely from the current UDTs. The SEALS began intensive training in counter-guerilla warfare, long distance reconnaissance, supply interdiction and raids.In concert with the Navy Special Boats Units, the SEALS conducted numerous types of river patrols all along the Mekong Delta and countless rivers, streams and tributaries of South Vietnam