In 1989 the Dolphins increased the size of the helmet logo dolphin so that a larger portion of the head and tail protruded from the outer boundary of the Sun.
This change lasted for the entire run of 1989-96.
The 1994 throwback helmet has been changed to an 'in the Sun' helmet logo.
9/25/94 - MIA @ MINN
throwback 'in the Sun' helmet logo