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The Question:

I read the list of the fastest animals on land at your site. But I was wondering what is the fastest animal in the sea might be?

The Answer:

According to Guinness World Records, the cosmopolitan sailfish is considered the fastest fish in the sea.

They point out that measuring a fish's speed over a short distance is very difficult to do. Still, in a series of speed trials carried out at the Long Key Fishing Camp in Florida, one sailfish took out 300 feet of line in three seconds, which is equivalent to a velocity of 68 mph.

—The Editors