Marine life in the seas around Britain is diverse: from the colourful anemones in rockpools to huge basking sharks. Our oceans are important socially and economically – they provide us with healthy food and other resources, they benefit our mental health and physical wellbeing, and offer endless recreational opportunities, from fishing to watersports. Global UN targets to protect 30% of the world’s oceans by 2030 involve establishing more marine protected areas.