If loud enough, sound can be very harmful to human ears. Any sound above 85 decibels can cause permanent damage. Seahawks fans at CenturyLink Field have been recorded at as loud as 137.6 decibels, twice setting the Guinness World Record for loudest stadium crowd. However, it is impossible to quantify the passion and intensity of Seahawks fans. They always produce an electric atmosphere, both in and out of the stadium, with their steadfast devotion to the team. With a string of playoff appearances in the last 20 years and back-to-back Super Bowl appearances including a victory over Peyton Manning and the Broncos, Seahawks fans have had plenty to cheer for. Though the team has struggled through some difficult recent seasons, Seahawks fans have never wavered, ready for the team’s return to postseason glory.