The theme of 2017 World Hydrography Day is ___________.

1.	The theme of 2017 World Hydrography Day is ___________.
Answer» The 2017 theme is "Mapping our seas, oceans and waterways - more important than ever". The World Hydrography Day (WHD) is observed every year on June 21 to publicise the work of hydrographers and to create awareness about hydrography which is an essential science before undertaking any activity on or under the sea.

Discussion