Q.

Which is the national aquatic animal of India                     [2016]

1 Blue whale  
2 Sea-horse  
3 Gangetic shark  
4 River dolphin  

Ans.

(4)

River dolphin found in holy river Ganga, Brahmaputra, Indus and its tributaries is the National aquatic animal of India. Presence of river dolphin in Ganga indicates pure and freshwater.