Noise

Eavesdropping on dolphin chat

A new project has been set up that will listen in on whale and dolphin activity in order to protect them and their homes.

Scientists from Northern Ireland's Agri-Food and Biosciences Institute (AFBI) plan to eavesdrop on marine mammals around the Irish and Scottish coasts using a network of sophisticated underwater monitoring devices.

Whale calls recorded at deepest point of the Earth’s surface

The first audio recordings taken from the deepest point on the Earth's surface have reveal a number of amazing sounds, including the calls of different species of whale. 

Little is known about what happens in the Mariana Trench, located at the bottom of the Pacific Ocean around 322 km (200 miles) southwest of Guam, but the recording do shed some light on what is a dark place (where the sun never shines).

Boat speed threatens endangered orcas

A new study on noise pollution published in the online journal, PLOS ONE has identified boat speed rather than size as being more of a threat to a group of endangered orcas.

Researchers monitoring of pod of orcas in the waters off Washington (US) found that speed was a more influential factor than how big a boat was when it came to the amount of noise from vessels reaching the pod.

US Navy forced to stop using harmful sonar in training exercises

A legal battle over the use of powerful sonar, and explosives in naval exercises has ended with the US Navy agreeing to limit their future use in any training to avoid potential harm to whales, dolphins and other marine mammals off Hawaii and California.

The decision comes after the US fisheries service was legally challenged by environmental groups in 2013 for allowing this kind of military activity.

Photographers fined for flying drones close to orcas

US authorities have fined two people for allegedly flying drones too close to a pod of orcas in Washington state. 

In what could well be the first case of its kind, the pair have been prosecuted after capturing footage of the ocras in the Haro Strait, just east of Vancouver Island, Canada.

New understanding of whale communication

Sound is the most important sense for whales. They use it to communicate with another as well as finding their way around the oceans, and in some species to catch their prey too.

Leading scientists call on Obama to stop noise pollution threat

A letter from over 50 leading scientists has been sent to US President Barack Obama asking him to keep the Atlantic Ocean free of planned, noisy oil exploration projects in order to protect whales, dolphins, and other marine life. The letter follows the recent announcement by the Obama administration that parts of the Atlantic coast would be opened up for drilling, with leases for oil and gas development to be awarded from 2017. Nine applications to drill are now being looked into.

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