I have reverted this changeset. That is not a correct change. The Northsea was already correctly tagged as place=sea. It should not be tagged as natural=water because it is already outside of the coastline. And as JeroenHoek said, please use better changeset comments. Changeset comments like "Texel" or "Noordzee" do not tell others what this changeset is about.

https://www.openstreetmap.org/changeset/153578028