As you may know Osea Island sits at the lower end of the Blackwater Estuary and is reachable on foot or by car at low tide via a windy track that disappears as the tide rises. Now an exclusive holiday retreat/recording studio (https://www.oseaisland.co.uk/) for celebrities such as Rhianna, Osea has had a colourful past that extends back into past two world wars and into history.

For Sailors in the local area Osea has a delightful anchorage that allows you to take in the full view of the island. From Mersea, its a pleasant 2 hour sail away.