Something watches from afar

 is a Sunless Sea Zee Random Event.

Event description
A movement in the water. A disturbance in the air. A chill down the spine. Since leaving the Nocturne, the crew has reported a strange sense of something watching... observing... following. Could it have been drawn by the candlelight during the search?

Trigger conditions
 is not technically random, but happens at Zee when Saviour's Rocks: Caught in the webs of Saviour's Rocks = 44 (A Scavenger for Spiders).

More specifically, this will occur during the Story exploring Saviour's Rocks, after visiting The Wreck of the Nocturne and completing The Secret of the Nocturne, on the Zee between the two locations.

Interactions
Just a little flavour to creep you out. The suggestion is the Tree of Ages does perhaps exist after all.