British photographer Mandy Barker’s Soup exhibition, displaying plastic debris suspended in the sea, has been on display since last year.
At the weekend part of the installation was vandalised, with the glass display that describes the work smashed and the stone holding the piece damaged.
Festival organiser Jean-Christophe Godet said he had spent Sunday morning clearing the place up after finding out what happened.
‘Luckily it was only one stone that was damaged out of the six or seven stones that we have there,’ he said.
‘Unfortunately though the part of the exhibition that was damaged was the glass display that explains the exhibit.
‘It’ll need to be repaired and a reprint made, we’re asking for a quote now and it’ll probably cost a few hundred pounds.’
The damage occurred between 11.30pm on Saturday and 1am on Sunday.
Mr Godet said he thought it more than likely that it had happened as a result of drunken behaviour.
‘It’s a bit stupid really that this has happened,’ he said.
‘Drunk people on a night out are probably the cause, God knows what happened in the middle of the night, there were also some bikes thrown. I can’t see any logic for the destruction.
‘This artwork is for the community and although it’s not the end of the world, it’s a bit sad.’
He remained optimistic that this kind of incident was not common.
‘We’ve never had problems before and we’ve been putting artwork here for several years,’ he added.
‘In fact it’s pretty rare in Guernsey full stop.
‘Our aim is to make art accessible for all and hopefully nothing like this will happen again.’
. Police are now investigating the damage. Anyone with information should call PC 152 Taylor on 725111 or via Crimestoppers, anonymously, on 0800 555 111.