From the Nikon Europe YouTube Channel:
A macro lens will help you get up close and personal with your subject, allowing you to capture details that may not even be visible with the naked eye. Enriched detail, together with impressive depth of field separation, also makes these lenses great for more than just macro shots.
If you'd like more information on macro lenses, check out our post Photography 101: What Is a Macro Lens?
B&H carries macro lenses.