The scientists say the biggest threat to the dolphins is overfishing in the two neighboring seas.
They use the strait, to migrate between the two larger seas.
Three volunteers from the Port Isaac lifeboat crew were awarded Medals for Gallantry after rescuing two people in dangerous seas.
Their 67-foot Seafarer became disabled Wednesday and was being towed by another ship about 15 miles east of Assateague Island when the two vessels became separated in heavy seas.
The tough race sees boats battling against the prevailing wind and encountering huge seas, which this year caused two dismastings and one boat, Cheminees Poujoulat-Armor Lux, to lose its keel.
BBC: Desjoyeaux crossed the Atlantic in eight days eight hours
Two French sailors have been rescued in separate operations in high seas off Cornwall.
In the area between the Black and the Caspian Seas lie countless festering issues, including separatist disaffection in two parts of Georgia, a territorial row between Azerbaijan and Armenia, and the question of a pipeline to carry oil to the Mediterranean via Turkey.
Around the world the inshore regions of our seas are estimated to have on average held 10 times the amount of life two or three hundred years ago than they do today.
Britain's Secret Seas begins with a programme on the Giants of the West on Sunday 8 May, on BBC Two at 2000 BST.
They are also trying to understand the role that deep seas trenches play in earthquakes - these cracks in the sea floor are formed at the boundary of two tectonic plates and some believe the push and pull taking place deep underwater could be the cause of major earthquakes, such as the 2011 quake that resulted in such devastation in Japan.
应用推荐