September 25, 2022

First with the Alderney News

Bottlenose Dolphins captured on camera

2 min read
Bottlenose Dolphins filmed off the south coast in June by Alderney Wildlife Trust

This pod of Bottlenose Dolphins was seen in June during an Alderney Wildlife Trust seabird survey on a boat off the south coast.

This spot is where dolphins are most commonly spotted as when the tide is coming in they use it to heard fish and play in the strong currents.

Claire Thorpe, AWT Outreach Director, said:

‘However Bottlenose Dolphins can be seen anywhere off the coast. We also sometimes see Common Dolphins but Bottlenose are more frequent.’

Last autumn scientists found that dolphins living in the English Channel are exposed to a ‘cocktail of pollutants’.

A study found some of the highest recorded levels of toxic chemicals and mercury in the bodies of bottlenose dolphins off the French coast.

Researchers say more needs to be done to tackle the “invisible” problem of lingering pollutants in the oceans.

The Channel is home to one of the last remaining large European populations of bottlenose dolphins.

Researchers took tissue samples from more than 80 dolphins living in waters off Normandy and Brittany.

They found high concentrations of mercury in skin and polychlorinated biphenyls, or PCBs, in blubber.

Other industrial chemicals, such as dioxins and pesticides, were also found in blubber samples.

The chemicals are passed down from mother to calf.

The study was published in the journal Scientific Reports.

The scientists say the bottlenose dolphin’s habitat – an area known as the Normanno-Breton Gulf – should become a special area of conservation to protect the population.

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