Environmental groups have opposed the proposed felling of around 680 mangroves for the 7.129-km Thane Coastal Road-2 project, which could affect 1.7 hectares of the Ramsar-listed Thane Creek Flamingo Sanctuary. NatConnect Foundation has appealed to the Prime Minister. Environmental groups have raised concerns over the proposed felling of around 680 mangroves for the Thane Coastal Road-2 project, which is expected to affect approximately 1.