I will give you an example of what one might be confronted with in the future from, from a piece from the Environment Committee in the House of Commons' Report on Coastal Zone Planning and Management and it says here,we fail to see what is impractical about treating the seabed as submerged land an opinion shared by the Royal Town Planning Institute no less and if planning authorities can deal with issues like public rights of way, aggregate extraction multiple use on land, they should be able to cope with rights of navigation and extraction of sea .