For the photography amateurs, Macro photography was invented by Fritz Goro.
The late Goro saw his goal as “making visible the world that lies between the microscope and the naked eye.” Turning to photography after the Nazi’s forced him out of Germany, Goro embarked on a career with LIFE Magazine, shooting scientific photoessays and was the magazine’s scientific and medical specialist for twenty-seven years.
Macro photography is a style of extreme close-up photography, usually of very small subjects, in which the size of the subject in the photograph is greater than life size. By some definitions, a macro photograph is one in which the size of the subject on the negative or image sensor is life size or greater. However in other uses it refers to a finished photograph of a subject at greater than life size.
Here is a series of macro photographs of insects from Huanqiu.com, courtesy of Xinhua.