Useful links:

• Snapshot 16w39a: [Wiki Page] [Mojang Page]

• Exploration Map: [Wiki Page]

• Ocean Monument: [Wiki Page]

Did you know that starting from Snapshot 16w39a the color of a map's ink is customizable (only on the item and you have to use commands to do so)? :D

Other search terms: Ocean Exploration Map - Ocean Monument Explorer Map - Ocean Monument Exploration Map - Ocean Temple Explorer Map - Ocean Temple Exploration Map - 1.11