Question

Mention the adaptation of dolphins and whales which help to live in water ​

Answer 1

Answer:

Among these adaptations are: streamlined bodies for efficient movement through water; forelimbs modified into flippers to aid in steering; hind limbs internalized remnants reducing drag; tail positioned horizontally to achieve a powerful up and down propulsion; hair replaced with under-skin blubber to provide warmth ...

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Answer 2

Explanation:

Dolphins and whales have blow holes that help them breathe in air when they swim near the surface of water. Physical adaptations include a blowhole located at the top of the body, which allows a dolphin to come up to the surface, easily take in air, and continue swimming. While asleep, half of a dolphin's brain remains awake.

In order to reduce heat loss, whales have three main adaptations: reducing the body's surface area to volume ratio, using their thick blubber layer as an insulator, and retaining heat through counter-current heat exchange. It is important for whales to have a low surface area relative to their total body volume.