From OpenStreetMap Wiki
|man_made = dolphin|
|A marine structure for berthing and mooring of vessels.|
|Used on these elements|
|Tools for this tag|
|This tag page is a stub. You can help OpenStreetMap by expanding it.
Similar pages for structural reference; Tag:railway=tram, Tag:waterway=dock
This page is a place-holder for this tag. See Proposed features/Dolphin