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Because whale ancestors were land animals with distinct digits. Over millions of years, their limbs evolved into flippers as they spent more time in the water. Those with flipper limbs that allowed them to get around with greater ease survived to pass on their genetic traits through aeons of evolution. And now we have whales.
(The nature of whale predecessors is also why whales breath air instead of taking in oxygen through gills, like fish - they're still stuck with remnants of land-dweller Biology.)
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Do polar bears have thumbs?
when you see a whale you think it doesn't have fingers. whereas, underneath their flippers are five finger-structured bones exactly like fingers but on a fish. that is why they are called tetrapods.
What are the rear flippers of a whale called?
they are called flippers
What is the function of flippers of the whale?
Swimming
What are the fins on a killer whale?
flippers
A Bat Bird Whale and one other all have this in Common?
Finger Bones The "one other" is Human
How does a humpback whale's flippers help it?
it helps them swim
Do whale sharks have flippers?
yes to swim around
How does the whale moves?
it moves by using it's flippers and back.
How does the beluga whale eat it's food?
the beluga it with its tail and flippers
What kind of fins does the blue whale have?
The Blue Whale has a small Dorsal Fin as well as its Flukes (tail) and its Flippers.
What helps a whale move its fin in water?
by using flippers modified forelimbs
Give an example of evolution as a remodeling process?
Whale fins remodeled from the legs of a ground dwelling animal over some millions of years. The bones are of the same construction and number, just overlaid with flippers now.
