1991-1994 | ;1,91,000 | ;Tamil Nadu State Council for Science & Technology, Madras
1992-1995 | 1,83,000 | University Grants Commission, New Delhi, India
1995-1996 | 2,64,990 | Government of Pondicherry, India
1997-2000 | 6,01,200 | Indian Council of Forestry Research & Education, Dehradun
1999-2000 | 1,61,000 | Ministry of Environment & Forests, Govt. of India
1999-2002 | 5,37,000 | Ministry of Environment & Forests, Govt. of India
2000-2003 | 9,91,438 | Department of Ocean Development, New Delhi
2003-2004 | 2,70,000 | Govt. of Pondicherry
2004-2005 | 50,000 | Tamil Nadu State Council for Science & Technology, Chennai
2005-2008 | 29,14,500 | Ministry of Environment & Forests, Govt. of India, New Delhi
2007-2008 | 10,90,614 | UNDP-GEF- Gulf of Mannar Biosphere Reserve Trust of Tamil Nadu
2008-2009 | 4,46,000 | Ministry of Environment & Forests, Govt. of India
2009-2012 | 25,98,800 | Ministry of Earth Sciences, New Delhi; Ocean Atmosheric Science and Technology Cell(OASTC)
2010-2013 | 13,11,828 | Ministry of Environment and Forests, Govt. of India, New Delhi
2000-2003 | 13,00,000 | Ministry of Environment and Forests (Govt. of India), New Delhi
2010-2011 | 7,00,000 | UGC, New Delhi
2013-2016 | 25,58,890 | Ministry of Environment and Forests (Govt. of India), New Delhi
2010-2011 | 7,00,000 | UGC, New Delhi
2013-2015 | 26,83,868 | Ministry of Environment and Forests (Govt. of India), New Delhi)
2013-2017 | 3,85,00,000 | UGC, New Delhi
2013-2015 | 4,74,00,000 | DST, Govt. of India, New Delhi
2013-2015 | 2,00,00,000 | Ministry of Human Resource Development, Govt. of India, New Delhi
2015-2020 | 2,99,00,000 | UGC, New Delhi
2003-2015 | 1,08,90,000 | United Nations University - Institute for Water, Environment and Health, Canada
1996-1998 | 80,000 | Rhode Island Zoological Society, USA
1996-1999 | 6,00,000 | WWF, Washington, USA