Mapping
Source: HT
Context: A rare sighting of a bull shark attacking a fisherman in Maharashtra’s Vaitarna River marked the first occurrence of such an event 40km upstream near Manor. Sharks typically swim only 7-8km into creeks and rivers. Experts attribute the shark’s unusual presence to factors like sand excavation creating breeding grounds for fishes and favorable conditions during high tides.
Key facts about Bull Shark:
- Known for their aggressiveness towards humans, considered one of the most dangerous shark species.
- Habitat: Frequently found in tropical coastal areas worldwide, including shallow waters along coastlines.
- Unique ability to tolerate freshwater and saltwater habitats, allowing them to venture into rivers and travel great distances upstream.
- Reproduces through viviparity, with embryos developing within the mother’s body and leading to live birth.
- Conservation status: IUCN lists them as Vulnerable.
About Vaitarna River:
- West-flowing river situated between Mumbai and the Tapi River.
- Originates in the Trimbakeshwar Hills of Nasik district, Maharashtra.
- Receives most rainfall from the South West monsoon, with 98% of annual rainfall occurring from June to October.
- The main tributaries include Pinjal, Ganjai, Surya, Daharji, and Tansa.
- The entire catchment area lies within the Thane and Nasik districts of Maharashtra.
- Drains an area of 2019 sq. km before flowing into the Gulf of Khambhat.
