Which endangered freshwater mammal, declared the national aquatic animal of India in 2010, inhabits the Ganges-Brahmaputra-Meghna river systems and is essentially blind?

• A Irrawaddy Dolphin
• B Indus River Dolphin
• C Amazon River Dolphin
• D Ganges River Dolphin ✓

The Ganges river dolphin (Platanista gangetica), or susu, was declared India's national aquatic animal in 2010 to raise awareness for its conservation as an indicator species of river health.