Shipwrecks, ports, lighthouses: land seen from the sea

The map overlays points for shipwrecks, ports and lighthouses, drawn from EMODnet data retrieved through a WFS service. Since no point lies on land, the coastlines appear only through the alignment of the points, on a dark blue background with a grid of meridians and parallels. The colours (blue, yellow, purple) distinguish data types, but the image has no explicit legend. Concentration is very high around Europe, the English Channel, the North Sea and the Mediterranean, and lower elsewhere. This density probably reflects data coverage, more complete in Europe, rather than the actual distribution of wrecks.