Page 24 - Primary Six Notes

 They have a high level of intelligence next to primates

 They have mammary glands

 They give birth to living young ones and suckle them on milk

from the mammary glands.

Key facts

 A whale is the largest mammal. A whale is over 30m long

and over 150 tones in weight .The whale is not a fish.

 A thin layer of blubber insulates the body against heat loss

and it is an important food store.

 Whales are hunted by people for their high quality oil.

 Sea mammals have some features similar to that of fish.

 All sea mammals are vertebrates and are warm blooded.

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