Calculating the flippers' efficiencies, the team found that the bottle nose
dolphin's triangular flippers are the most efficient while the harbour porpoise and Atlantic white-sided dolphin's fins were the least efficient.
dolphins were only seen occasionally, even though nearby Cardigan Bay is thought to have a population of over 200
One of the first tasks the group has set itself is to find out what happens to bottle nose
dolphins in the winter.
The unnamed wholphin is one-quarter false killer whale and three-quarter Atlantic bottle nose
PORPOISES are being rammed to death by bottle nose
dolphins in a battle for survival and food along the coast of Wales.
Initial reports said 72 pilot whales and 30 bottle nose
dolphins died after beaching themselves at Sea Elephant Bay.
Above: Common dolphins; below left: a bottle nose
dolphin; below right: a harbour porpoise; and main picture: a Risso's dolphin -all visitors to our seas