Earlier this month, the beach saw massive deposits of tar balls between July 5 and 6.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/mumbai-activists-seek-probe-tar-balls-juhu-beach
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-news-analysis-mumbai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/marine-ecosystems
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environmentalists
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment