If you have ever tried to stalk the clearly heard but evanescent presence of grasshoppers, you will know they bubble up and disappear as you approach, as ephemeral as a champagne bubble.
‘As I walked through them, green grasshoppers danced up like the bubbles off a newly poured glass of champagne.’
Source: Adam Nicolson, The Mighty Dead (London: William Collins, 2015), p. 166
