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Dominica announces new protections for sperm whales

Dominica has placed almost 800 square kilometers of sea off the west coast of the...
Commerson's dolphin

New Important Marine Mammal Areas added to global ocean conservation list

Commerson's dolphin Experts from a number of countries have mapped out a new set of...
Vaquita. Photo Thomas Jefferson

Scientific Committee gives first ever official species extinction warning

Photo: Thomas Jefferson We have welcomed the urgent call by experts to protect the vaquita...
blue whale

Whale fossil from Peru may have been heavier than blue whale

Scientists examining the bones of a 39 million-year-old ancient whale have concluded that it may...

Study Reveals Man-made Noise Travels 4000km Under Water

Acoustic ‘listening’ devices placed in the sea to measure seismic ‘noise’ activity over a 10 year period have revealed some astounding and very worrying results.

The devices were placed in an area at the bottom of the Atlantic Ocean called the Mid-Atlantic Ridge, and recorded the airgun sounds produced from vessels looking for oil and gas deposits below the seabed. Surprisingly, airgun sounds were recorded almost 4000 km from the survey vessel in areas that are likely occupied by fin whales, and at some locations airgun sounds were recorded almost every day for more than 12 consecutive months. Both airgun and fin whale sounds were also recorded at all sites.

Understanding the true impact of this noise on fin whale communication and on individuals or populations is difficult but, given the distance over which airgun sounds travel, this is very worrying indeed. Fin whale populations are still reduced from whaling activities, and their communication under the water is likely to play and important role in successful future breeding.

Find out more about the survey details
More on noise pollution