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Royal Navy exercises accused of causing Cornwall dolphin deaths
The Royal Navy has been accused of contributing to the deaths of 26 dolphins in Cornwall last year.
The Navy was carrying out exercises in the area in which the dolphin pod beached themselves in the area around Falmouth.
The Navy’s use of sonar technology has long been associated with causing disturbance and stress for marine mammals, particularly dolphins which rely on their version of sonar for navigation.
The Zoological Society of London (ZSL) report states that Navy sonar is unlikely to have directly caused the beachings but could have been a contributing factor – a ‘trigger’ – in pushing the marine mammals close to shore.
Dr Paul Jepson said: “We don’t have definitive information but we’ve ruled out everything else, and it’s possible that something in the naval exercises caused the mass stranding.”
However, following the publication of the report, the Whale and Dolphin Conservation Society (WDCS) directly accused the Navy of causing the deaths.
Sarah Dolman of WDCS, said: “The post-mortem results have shown us that those dolphins that died were healthy animals prior to stranding. Something frightened them ashore, way up inside the river system, where this species in not generally known to go.
The unusual behavioural response of all these groups of otherwise healthy animals was triggered by something. An ‘error of navigation’ would not lead this many dolphins to strand, and other groups to behave in such an unusual manner, on the same morning – but over a distance of 20km.”
WDCS is calling on the Navy to carry out environmental impact assessments prior to exercises.