Quiz on Dolphins - Indian Wildlife Club

1. Most dolphins navigate by

Sight

Echolocation

X-ray vision

2. The largest member of the dolphin family is

Narwhal

Gangetic Dolphin

Killer Whale

3. The life span of a dolphin in the wild is

30 years

20 years

45 years

4. The Irravadi dolphin can survive in………….

salt water

fresh water

both are correct

5. Dolphins are found in India …………......

from beaches near Kozhikode ( Kerala)

While cruising near Goa

at both the places

6. Dolphins communicate by

Dorsal fin movements

Talking

Whistling

7. The numbers of the Gangetic river dolphin have dwindled to approximately…………...

2-3,000

10-15,000

6-7,000

8. Dolphins sleep .............

Closing one eye at a time, allowing one side of the brain to rest while using the other to watch for predators.

Nestled underneath a rocky overhang to protect themselves from predators

In groups. Half the pod sleeps while the other half watches for predators

9. What is the maximum amount of time a bottlenose dolphin can hold its breath?

15 minutes

20 minutes

5 minutes

10. Dolphins are

fish

mammals

reptiles