The lobster can be used to crank the light on the lighthouse, which will scare away the pesky seagull from the school bell tower.
Get the old photo blowing in the wind at the left of the lighthouse, and swap it for diving gear at the Say Cheese shop. Dive at Puffin Point to get Cap'n Salty's lost lobsrer trap. He will give you a lobster and his jet ski keys.
the tool is the lobster
You fetch the lobster trap.
You get the keys from the lobster guy. Then you ride. Jump when necessary to reach the island. Be faster than Nate!!
The crustacean in the lobster trap is a lobster. (see the related questions)
On Big Nate Island, you use a lobster (no kidding) to turn the lighthouse crank. (see the related question below)
Once. But you have to be at the lighthouse crank. Use the lobster and it will automatically complete the process.
you already get them when you get the lobster from the fisher man who needed the crab cage.
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
use the lobster that you can get after completing cap'n salty's quest
You get "pliers" on Big Nate Island* by using the lobster. To get the lobster, catch the photo flying around to the left of the lighthouse. Swap it for scuba gear at the photo shop, and dive to recover Cap'n Salty's lost lobster trap. *Pliers on 24 carrot island are "wire cutters". (See related question)
You don't just get the keys after you get the lobster and the scuba gear then the guy that wants it will give you the keys.
Use the lobster to crank the lighthouse light. Turning it left will scare the seagull from the school's bell tower.