Question

Aquatic animals like dolphins and whales reside in water for a long time without breathing. They come out to the surface from time to time, to breathe in air. Which of the following structures help them for breathing?

• A. gills
• B. fins
• C. blowholes
• D. spiracles

Answer 1

The correct option is C blowholes

There are some sea animals like dolphins and whales that do not have gills. They breathe in air through nostrils or blowholes that are located on the upper parts of their heads. This allows them to breathe in air when they swim near the surface of water. They can stay inside the water for a long time without breathing. They come out to the surface from time to time, to breathe in air.