View all ZFS snapshots of a particular pool
Select the “Storage” main menu item on the left of the screen.
Select the “ZFS Pool manager” sub menu tab.
The main area will then display the list of all available pools along with the datasets/block device volumes in each of the pools.
Corresponding to each pool, you will see a button saying “View pool details”. Clicking on this will take you to a screen that displays the pool details.
A section called “ Pool snapshots “ in this page will display all the snapshots taken for this particular pool.