Image courtesy of Square Enix
FFXIV 5.41 How to unlock the Big Shell Mount
Available with Patch 5.41 and the fourth phase of the Ishgardian Restoration in Final Fantasy XIV the Big Shell is a Skybuilder Scrips mount.
Players can exchange the Big Shell Whistle that unlocks the mount for 8.400 Skybuilder Scrips by talking to Enie in the Firmament (X: 12 Y: 14)