The inception of the Earth Sciences Association (ERSA) is to promote advanced knowledge and awareness in Earth Sciences. It provides a platform for students to step up their extra-curricular activities like sports, culture, literary and arts.

The ERSA has existed since about 1983, but it was officially recognized as a part of the Students Activities Centre (SAC), IIT Bombay, in the year 2005. Currently, ERSA Council comprises a Departmental General Secretary, a Departmental Association General Secretary, a Cultural Secretary, a Sports Secretary, a Web Secretary, an Alumni Secretary and a PG Sports nominee.