Fisher,
Lockers
Solution
Lockers
Spoiler
If you have found where the snail escaped from just look at the locker then talk to Clerk and he will unlock it.
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Spoiler
I assume you can see the snail trail,(talk to creature) you can follow this 'line maze' to 'your' locker, or just try and find the other end of it.
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Solution
Spoiler
Locker 29,2 up, 4th in from right
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