A League in the context of 20,000 Leagues Under The Sea is 3 Miles.
If you mean the book by Jules Verne it was '20,000 Leagues Under the Sea'.
a few of the sea animals cannot stay under water for a long time.
A "league" is three nautical miles. In the Jules Verne story, the submarine Nautilus traveled "20,000 Leagues Under The Sea", a distance that is (very approximately) three times the circumference of the Earth.
A unit of distance equal to 3.0 statute miles (4.8 kilometers). 1 league equals 4.8 kilometers!
When long. Island is under the sea
1,201 months
Sea Snakes can hold their breath for up to an hour.
The sea otter can stay under water for five minuets.
only 2-5 minuts?
most of them
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The longest under ocean tunnel is the Seikan Tonneru. It is an underwater railway tunnel in Japan. It has a 14.5 mile long portion under the sea bed. The track level is 330 feet below the sea bed.