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    the southern Hemisphere 40 million years ago.
    0:33

    the southern Hemisphere 40 million years ago.

    the southern Hemisphere 40 million years ago.
    2 views
    lived 50 million years ago
    0:36

    lived 50 million years ago

    lived 50 million years ago
    1 view
    trong muscular system to support underwater movement
    0:45

    trong muscular system to support underwater movement

    trong muscular system to support underwater movement
    2 views
    and was found in what is now Pakistan.
    0:46

    and was found in what is now Pakistan.

    and was found in what is now Pakistan.
    1 view
    structural changes to adapt to underwater life
    0:46

    structural changes to adapt to underwater life

    structural changes to adapt to underwater life
    1 view
    which is a rare major turning event in the evolutionary history.
    0:49

    which is a rare major turning event in the evolutionary history.

    which is a rare major turning event in the evolutionary history.
    2 views
    The ancestors of cetaceans returned to the ocean 250 million years
    0:47

    The ancestors of cetaceans returned to the ocean 250 million years

    The ancestors of cetaceans returned to the ocean 250 million years
    1 view
    n the evolutionary history of species
    0:31

    n the evolutionary history of species

    n the evolutionary history of species
    1 view
    Scientists know more about Pakicetus
    0:40

    Scientists know more about Pakicetus

    Scientists know more about Pakicetus
    1 view
    which was separated from ruminants 60 million years ago
    0:49

    which was separated from ruminants 60 million years ago

    which was separated from ruminants 60 million years ago
    4 views
    f whale and hippopotamus is a semi-aquatic omnivore,
    0:31

    f whale and hippopotamus is a semi-aquatic omnivore,

    f whale and hippopotamus is a semi-aquatic omnivore,
    2 views
    rely on the echolocation function; Some species are
    0:45

    rely on the echolocation function; Some species are

    rely on the echolocation function; Some species are
    1 view
    In general, the body size
    0:36

    In general, the body size

    In general, the body size
    species of baleen whales.
    0:37

    species of baleen whales.

    species of baleen whales.
    The nostrils are raised on top
    0:41

    The nostrils are raised on top

    The nostrils are raised on top
    entered the water 50 million years ago
    0:49

    entered the water 50 million years ago

    entered the water 50 million years ago
    Cetacea
    0:48

    Cetacea

    Cetacea