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The largest animal in the sea is actually the blue whale.

(a marine MAMMAL) at 98 feet in length. The Blue whale (Balaenoptera musculus) is the largest animal species this Earth has ever known to have existed.

there could be others at the bottom of the oceans or elusive of humans or probes.

Fully grown, these great creatures reach a length of over 30 metres and weigh as much as twenty-four large elephants, or more than 1,500 men. The heart of a blue whale is more than a metre in diameter.

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7y ago
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13y ago

The biggest mammal in the sea is the blue whale, it is the biggest creature on this planet.

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13y ago

No, the meggribble's the biggest sea creature it measures 700 metres by 100 metres.

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14y ago

whale shark?

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14y ago

blue whale

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Q: What is the biggest sea creature ever lived?
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