The Seattle Seahawks team, along with the Tampa Bay Buccaneers, joined the NFL in 1976 as expansion teams. Seattle is the only team to have played in both the AFC (American Football Conference) and NFC Championship Games. The Seahawks have one Super Bowl appearance, Super Bowl XL. The Seahawks are the only NFL team to switch conferences twice in the post-merger era. This realignment was dictated by the league as part of the 1976 expansion plan, so that both expansion teams could play each other twice and every other NFL franchise once during their first two seasons.