How does shipping noise affect pilot whales?

Shipping noise levels in areas like the Strait of Gibraltar are so high that pilot whales must increase the volume of their calls to be heard, impacting their communication.

Can pilot whales always shout louder to be heard?

No, pilot whales can only increase the volume of certain calls. Their loudest calls, vital for pod reunion, cannot be made any louder.

What is the impact of loud ship noise on whale communication?

Increasing noise pollution decreases the effective communication range for whales, making it more difficult for them to find each other.

Home / Science / Whales Shout Louder Amidst Ocean Noise Pollution

Whales Shout Louder Amidst Ocean Noise Pollution

8 May

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Summary

Shipping noise levels in the Strait of Gibraltar mimic loud environments like vacuum cleaners.
Endangered pilot whales must increase call volume to be heard over ship engines.
Whales struggle to emit louder calls for vital functions like pod reunion.

Whales Shout Louder Amidst Ocean Noise Pollution

Pilot whales navigating the busy Strait of Gibraltar are being compelled to increase their vocalizations significantly due to escalating underwater noise pollution from shipping. This research, conducted between 2012 and 2015, utilized recorders attached to 23 pilot whales to measure underwater sound and whale calls. Findings indicate that background noise levels can range from 79 to 144 decibels, akin to the sound of a noisy restaurant or a vacuum cleaner.