Sea creatures have evolved over millions of years to maximise efficiency of movement through water; humans have been trying to perfect streamlined designs for barely a century.

Four weeks on from the shocking incident that led to the death of 26 dolphins near Falmouth, research released today (7 July 2008) sheds new light on the extent of the problems facing Cornwall's marine mammals.

The numbers of Northeastern offshore spotted and eastern spinner dolphins in the eastern tropical Pacific Ocean are increasing after being severely depleted because of accidental death in the tuna purse-seine fishery between 1960 and 1990, according to biologists from NOAA's Fisheries Service.

A dolphin has died after a collision with another dolphin in mid-air during a stunt performance at Discovery Cove, a sister park of SeaWorld in Orlando, Florida. This is the first time an incident of this nature has ever occurred since the park opened in 2000.

A Rare Ganges River Dolphin is killed by fisherman in the hope of selling the dolphin as a rare fish, reports Bangladesh Sangbad Sangstha news agency.

Animal rights groups have condemned the governments of the Solomon Islands and Dubai for approving the trade of live dolphins. A Solomon Islands company flew 28 live dolphins to Dubai last night after winning a court battle overturning a ban on the trade.

An international research team, including biologists from NOAA Fisheries Service, has reported in an online scientific journal that it had failed to find a single Yangtze River dolphin, or baiji, during a six-week survey in China. The scientists fear the marine mammal is now extinct due to fishing and commercial development, which would make it the first cetacean to vanish as result of human activity.

The reported sighting of a Yangtze River dolphin, or Baiji, means there is still a chance for people to take further action and protect the cetaceans in the Yangtze from extinction, according to World Wildlife Fund.

Berlin's landmark Brandenburg Gate was decorated with"¦ corpses of 17 small whales and dolphins on Monday in a dramatic action by Greenpeace activists to urge countries to resist increasing pressure for a resumption of commercial whaling.