FINAL FANTASY 12, how do you get the old sluice gate key, for the garamsythe waterway? I must have missed it?

Answer 1

U have to hunt:
06. Lost in the Pudding
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Client: Sorbet (Rabanastre - Westgate)
Reward: 2800 Gil
Yoichi Bow x1
Sluice Gate Key x1 (Scene after the hunt)
Enemy: White Mousse (No. 222)
Target: Found in the [West Sluice Control] of the Garamsythe Waterway. No tricks, just head down to the shallow water and it'll drop.