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It is estimated that the first motile eukaryotic organisms began to appear some 800 million years ago.
3.6 billion years comb-like simple animals, not plants, first appeared in ocean depths in which light could not penetrate.
Wiki User
∙ 11y ago
Wiki User
∙ 10y agoThe earliest known fossils of fish date to 535 million years ago, during the Cambrian. They were small, jawless creatures. Known genera include Hiakouella, Haikouichthys, and Myllokunmingia.
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What seas do leatherback turtles swim in?
all seven seas
Is it true that fish can swim?
Yes fish can swim.
Are there fish that swim upward?
Fish can swim in any direction.
What is a fish that can swim?
A catfish would be an example of a fish that can swim.
What is the swim bladder in a fish?
to help the fish swim and float
What fish doesnt swim?
the only fish that doesn't swim is none. only the mudskipper can go on land
Which fish is not swim in ponds?
One fish that should not swim in ponds is the Stonefish.
What seas do the blue whales swim through?
all of them
Can pikes swim?
Pikes are a breed of fish.... all fish can swim !
Which fish cannot swim in sea?
There are certainly aquatic animals that can't swim, such as the clam, or the adult barnacle (and even then, the larval form of the barnacle does swim) but you wouldn't really call anything a fish if it couldn't swim. Fish swim.
Why did dead fish not swim in water?
Once a fish has died it can't swim.
Where do fish swim that makes them so clever?
Fish swim in schools.
