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Option 4 : Beas

The correct answer is option 4, i.e. Beas.

River Dolphin is the National Aquatic Animal of India.

Indus river dolphins:

Origin

  • Ancient Tethys Sea.

Habitat

  • River.
  • The dolphins were forced to adapt to its only remaining habitat rivers as the sea dried up approximately 50 million years ago.

Inhabitation Region

  • Indus River in Pakistan and River Beas, a tributary of the Indus River in Punjab, India.

IUCN Status

  • Endangered
  • Because the vast inhabitation area has been altered by the irrigation-related projects and construction of dams.
They rely on echolocation to communicate, navigate and to hunt prey as they are functionally blind as they have adapted to life in the muddy river.
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