It was determined that sharks can detect sounds from farther distances than thought

It turns out that sharks can detect underwater sounds from much greater distances than previously thought.

In a study conducted off the southeastern coast of the US state of Florida, scientists found that blacktip sharks can hear sounds from approximately 75 meters away and determine the direction from which the sound comes.

Florida Atlantic University researchers monitored the sharks' reactions with drone cameras by broadcasting sounds at different frequencies from the speakers they placed underwater.

75 METRE UZAKTAN TEPKİ VERDİLER

Three different low-frequency sounds in the range of 100-200, 200-400 and 400-800 Hertz were used in the experiments.

For control purposes, a sound with a frequency of 10 kilohertz, which is outside the known hearing range of sharks, was played.

Sharks responded to all three low-frequency sounds while ignoring the high-frequency control sound.

In the research, it was determined that animals can perceive sound from up to 74 meters away. It was stated that this distance was the farthest hearing distance ever demonstrated in sharks swimming freely in their natural environment.

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Another finding that caught the attention of scientists was that sharks not only hear sound.

Many of the animals changed direction immediately after the sound was played. Researchers said this indicates that sharks can determine the direction of the source of the sound.

It was observed that sharks were especially sensitive to lower frequency sounds and could perceive these sounds from longer distances and at lower intensity.

The senior author of the research is Prof. “The ocean is an acoustic environment, and it is clear that sharks are adapting to it in ways we are only beginning to understand,” said Stephen Kajiura. he said.

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The results of the research also attract attention due to the anatomy of sharks.

While many fish have gas-filled swim bladders that help detect sounds, sharks do not have this structure.

Instead, scientists think that sharks detect vibrations and movements caused by sound waves passing through the water, thanks to their extremely sensitive inner ear structures.

Researchers stated that they revealed that particle movements, especially those created by sounds at long distances, can be detected by sharks.