The checkered patterns are seaweed farms, 16mm film frame.
3 days left until the European Premiere of Hangs Upon Nothing, tickets here: https://www.riversidestudios.co.uk/online/performances.php?eventId=1111:3217
Magicseaweed posted a piece that Chris Nelson put together about the film here: http://magicseaweed.com/news/hangs-upon-nothing/5727/
