The United States Navy's Sea, Air, Land Teams, commonly known as the Navy SEALs, are the U.S. Navy's principal special operations force and a part of the Naval Special Warfare Command and United States Special Operations Command.

"SEAL" is always capitalized in reference to members of the Naval Special Warfare community. The acronym is derived from their capacity to operate at sea, in the air, and on land. SEALs are male members of the United States Navy. An exchange program with the Coast Guard, which graduated three Coast Guardsmen as SEALs, was suspended in 2011.

The CIA's highly secretive Special Activities Division (SAD) and more specifically its elite Special Operations Group (SOG) recruits operators from the SEAL Teams. Joint Navy SEALs and CIA operations go back to the famed MACV-SOG during the Vietnam War. This cooperation still exists today and is seen in the wars in Iraq and Afghanistan.

SEAL Teams are organized into two groups: Naval Special Warfare Group One (West Coast), and Naval Special Warfare Group Two (East Coast), which come under the command of Naval Special Warfare Command, stationed at NAB Coronado, California. As of 2006, there are eight confirmed Navy SEAL Teams. The original SEAL Teams in the Vietnam War were separated between West Coast (Team ONE) and East Coast (Team TWO) SEALs. The current SEAL Team deployments include Teams 1, 2, 3, 4, 5, 7, 8, and 10. The most recent to come into being are SEAL Team 7 and SEAL Team 10, which were formed in March and April 2002 respectively.

The Teams deploy as Naval Special Warfare Squadrons or Special Operations Task Forces and can deploy anywhere in the world. Squadrons will normally be deployed and fall under a Joint Task Force (JTF) or a Combined Joint Special Operations Task Force (CJSOTF) as a Special Operations Task Force (SOTF).

Each SEAL Team is commanded by a Navy Commander (O-5), and has a number of operational SEAL platoons and a headquarters element.

A SEAL Team has a Staff Headquarters element and three 40-man Troops. Each Troop consist of a Headquarters element consisting of a Troop Commander, typically a Lieutenant Commander (O-4), a Troop Senior Enlisted (E-8), a Targeting/Operations Officer (O-2/3) and a Targeting/Operations Leading/Chief Petty Officer (E-6/7). Under the HQ element are two SEAL platoons of 16–20 men (two officers, 14–16 enlisted SEALs, and sometimes assigned non-NSW support personnel); a company-sized Combat Service Support (CSS) and/or Combat Support (CS) consisting of staff N-codes (the Army and Marine Corps use S-codes); N1 Administrative support, N2 Intelligence, N3 Operations, N4 Logistics, N5 Plans and Targeting, N6 Communications, N7 Training, and N8 Air/Medical.

Each Troop can be task organized for operational purposes into four squads, of eight 4–5 man fire teams. The size of each SEAL “Team” with Troops and support staff is approximately 300 personnel. The typical SEAL platoon has an OIC (Officer in Charge, usually a Lieutenant (O-3)), an AOIC (Assistant Officer in Charge, usually a Lieutenant (junior grade), O-2), a platoon chief (E-7), an Operations NCO/LPO (Leading Petty Officer, E-6) and other operators (E-4 to E-6). The core leadership in the Troop and Platoon are the Commander/OIC and the Senior Enlisted NCO (Senior Chief/Chief).

Troop core skills consist of: Sniper, Breacher, Communicator, Maritime/Engineering, Close Air Support, Corpsman, Point-man/Navigator, Primary Driver/Navigator (Rural/Urban/Protective Security), Heavy Weapons Operator, Sensitive Site Exploitation, Air Operations Master, Lead Climber, Lead Diver/Navigator, Interrogator, Explosive Ordnance Disposal, Technical Surveillance, and Advanced Special Operations.

Naval Amphibious Base Little Creek, a naval base in Virginia Beach, Virginia, is home to SEAL Teams 2, 4, 8, and 10. Naval Amphibious Base Coronado, a naval base in Coronado, California, is home to SEAL Teams 1, 3, 5, and 7. There is also a SEAL Delivery Vehicle (SDV) unit, SDVT-1, located in Pearl Harbor, Hawaii. SDVT-2 was based in Virginia; it was disestablished and merged into SDVT-1. SDV Teams are SEAL teams with an added underwater delivery capability. An SDV platoon consists of 12–15 SEALs. Declassified locations:

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