The Seattle Seahawks are one of the most unique teams in the NFL. They're also isolated – located in the Pacific Northwest, they're based over 800 miles from the nearest NFL team. Despite only joining the NFL in 1976, the Seahawks have played in both the NFC and AFC, and they're known for having one of the loudest fan bases in football. Fans have ever set a Guinness World Record for stadium noise on multiple occasions.