What are some varieties of seagulls?

There are 11 different genus of seagulls the main four are; Chroicocophalus, Leucophaeus, Ichthyaetus and Larus. There are currently (2013) 55 confirmed species of gulls. The most common species of seagulls are the Pacific Gull, Dolphin Gull, White-eyed Gull and Silver Gull.