You have to use the blueprint from Nate's locker, the stink bomb from the Science room, and the gum, to reach the secret room under the detention room. The bell clapper is hanging there, and putting it back lets you ring the bell.
To get the seagull away, you have to turn the lighthouse light. Use the lobster.
you dont
The bell on Big Nate Island on poptropica is located on the top school building. To reach it when you have the clapper, you need to get rid of the seagull there. (see related question)
you never give the lobster to the seagul you shine the light houses light to the seagull and the lobster you give to the man
There are no seagulls to ride on (as of yet) on a Poptropica island. Gulls appear on Big Nate Island, Ghost Story Island, and Wimpy Boardwalk.
get the lobster and the go to the top of the lighthouse and there is a light thing use the lobster and it would turn and chase away the seagull
The seagull has to be chased from the bell tower. (see related question)
No. Climb to the lighthouse light and use the lobster like pliers to turn the light. When it shines to the left, it scares off the seagull from the school's bell tower.
you use the lobster to pinch the lighthouse light and then it moves and the seagle moves!
Use the lobster to crank the lighthouse light. Turning it left will scare the seagull from the school's bell tower.
Once you have the lobster, climb the lighthouse and use it to turn the light to the left, scaring away the bird.
Once you scare away the seagull from the bell tower, you can replace the missing clapper and ring the bell.(see related questions)