Zee-ztory

 is considered a Knowledge Curiosity item.

Item description
"Strange truths are told of the waves and what lies beneath. The lies are even stranger."

Obtaining
 can be obtained in the following ways:

The Unsettling Sage from the Tireless Mechanic's storyline can -after talking to him- turn 1 x Memory of Distant Shores into 1 x 

Like Memory of Distant Shores this item is arguably worth more than it can be typically exchanged for. You can't just buy them in bulk for those prices, and with the vast number of uses for them you are quite likely to run out of them. Of course, there's also vast number of opportunities to gain them, and that's where the catch is - to gain more of them you'd typically have to forgo getting something more valuable than their sell price.

= Zee-ztory =

Usage
 has the following uses:
 * You can sell it to the Alarming Scholar at The University in London, for +10 x Echo.
 * In the A Glittering Eye event, you need 1 x  for the Turn the situation around action.
 * In the Burning Blue event, you need 1 x  for the Spin them a story action.
 * In the Mangrove College, you need 7 x  for the Unpick the Mysteries of the Zee action.
 * In London, the A Visit to Clathermont's Tattoo Parlour requires 1 x  for the The Wheel of Mists action.
 * In Whither, at The House of the Question, 1 x Zee-ztory is required for either "Gaining Salt's Attention" or "Lifting Salt's curse".
 * In Your Lodgings, you need 77 x  for the Write the Zong of the Zee action.