Starting with the last regular-season game of the 1973 season and continuing through Super Bowl VIII; some of the Dolphin players began using this logo on their helmets instead of the previous logo. This logo was adopted officially as the main logo beginning with the 1974 NFL season.
Other than a few tweaks to the "M" on the helmet and the dolphin appearing more green in color, the logo went through little change.
The Dolphins introduced the logo in early 1997 and they also announced new uniforms later that year. The logo has a dolphin with a game face on it and the color scheme now includes navy.
This logo was officially confirmed on March 27, 2013, after it was leaked online. This logo has been officially adopted on April 25, 2013.