Seagull

Seagull is an animal (possibly a zombie) encountered in the Pirate Seas. It carries the Seagull Zombie. Kernel-pult's butter, and blover's gust can kill it and the Seagull Zombie instantly, so it is a good choice to use against them. If the zombie is killed, it flies away, but if it is buttered, it falls into the ocean with the Seagull Zombie.

Trivia

 * It is the only enemy in Plants vs. Zombies 2: It's About Time to not have an almanac entry. It is also unknown if it is a zombie or a normal seagull, since the Seagull Zombie is the one eating the brains at the Player´s house while the seagull carries it. Also, the game gives no clues besides its yellow zombie-like eyes. The Zombie Parrot, the Zombie Pig, the Dolphin, the Zombie Worm and the Zombie Chicken were confirmed to be zombies, though.
 * It is never seen eating brains on its own, since it flies away when its master is defeated, and only the Seagull Zombie eats the player´s brains, Something similar happens with the Zombie Parrot.
 * It is one of three enemies that can be instantly killed by butter, the others being the Zombie Parrot and the Zombie Chicken. In the Zombie Chicken's case, it is simply too weak to survive the hit, but because the Zombie Parrot and Seagull Zombie fly, they will crash after being hit by the butter.
 * It can be blown away by Blover.