The estuary has many types of mangroves and associated plants and attracts a lot of migrant and resident birds, fish and crustaceans. Mainstream media has recently reported the presence of Endosulfan in the waters of river Shiriya. It is so in the case of most of the other major rivers in Kasaragod which originate from the eastern hills, where the Plantation Corporation and other private interests use pesticides and even spray Endosulfan from air.Shiriya River, called Kambaru River flowing near Kambaru Temple, jois the Arabian sea between Kumbla and Uppala.Water is used for the irrigation purpose.
Both side of the river is naturally at low level and cultivation of paddy, coconut,supari and banana was in practice. As the high cost of labour and availability had given bad effect on agriculture the land left barren. Also the construction of roads & buildings cause soil erosion and mostly 80% of the river is filled with sand and stays always dry.This river was rich in very good kind of fish and a clean blue water.
The famous shrines in Kumble are Sri Parthasarathi Temple, Mujungavu, Ananthapura Lake Temple(This is the only lake temple in Kerala and is believed to be the original seat (Moolasthana) of Ananthapadmanabha Swami (Padmanabhaswamy temple) Thiruvananthapuram) , Arikkady Hanuman Mandira,Kana Dhumavathi Daivasthana,Sri Bhagavathi Ali Chamundi keshthra in Arikady,Sri Durga Parameshwari Temple in Arikady East,Sri Gopalakrishna Temple,Gadde Mutt oldest Nayak family Temple etc. Kumbla is also famous for its annual festival called Kumbla Bedi celebrated at the Sri Gopalakrishna Temple.Anil Kumble, former captain of the Indian national test cricket team takes his last name, indicating ancestry or family origins, from this town.