The sea is obviously connected to circularity because it is an essential element of certain fundamental cycles, from that of water to that of coal. However, this is a technical aspect which recalls age-old knowledge, like that of the medieval schoolmen regarding evaporation or the very modern studies into mechanisms, for example, which so far have allowed for the absorption of around half of carbon dioxide emissions, and are now declining due to climate change.  But another aspect of the sea-circularity relationship produces a more immediate, more all-embracing emotional impact. Just step onto a beach or take a swim and you will directly experience the invasion of something which is not very circular at all – unwanted objects instead of fish, waste which we thought we ...