João Ventura da Cruz is a Lieutenant and Hydrographic Surveyor in the Portuguese Navy. He attended the Portuguese Naval Academy from 2004 to 2009 and earned a Master's Degree in Military and Naval Science. In 2012 he obtained FIG/IHO/ICA Category A Level Hydrographic Surveyor certification. Since then he serves in the Hydrographic Brigade of the Portuguese Hydrographic Institute.
Submarine craters off the island of Santa Maria in Azores, Portugal. Data processed in CARIS HIPS and SIPS software.
The calendar image is available in several screen resolutions. To download the image right-click on the appropriate screen resolution and select Save Link As... then save it to the desired location on your computer. Alternatively, click the link to view the wallpaper image then right-click and select Save Image As... or Set As Desktop Image.