The seagull keeps you away from the school bell on the clock tower. To get rid of it, You need to turn the light on the lighthouse in the opposite direction. This will scare the bird away. You can use a lobster as pliers.
To get a lobster, catch the old photo that is blowing in the wind by the left side of the lighthouse, and swap it for diving gear at the Say Cheese photo shop. Dive at Puffin Point to find Cap'n Salty's lost lobster trap, and he will give you a lobster.
You ring the bell
No, you have to find a way to get the seagull to go away. As it happens, the lighthouse light can be turned to the left with a crank. Turning it will scare the seagull away and let you repair the bell. (see related question)
Turn on the light house which will trigger the seagull to go away put the bell tong in the bell ring the bell the girls go away get the crackers put the crackers where the girls were the dog will come dig in that area and you finish big nate isaland
Al the way 2 the right of the island
Once the seagull is chased away, you can use it to repair and ring the bell (which is the only way to get the girls off the playground spot where Spitsy is going to dig). (see related question)
You have to get in detension
on the way top
in the detention room
The "clamp" you use to turn the lighthouse light is the LOBSTER. Once you turn the lighthouse light, the seagull will be scared away from the bell tower, and you can fix the school bell and ring it, getting the girls out of the way at the playground.
get the bell clapper
you have to look all the way to the right
There is a doorway to one in the school, but no way to enter that room.