However, jet-skiers have been racing at speeds of up to 80mph, causing stress to the pods of dolphins and raising fears that they may be scared off. Charles Farquhar, the leisure and culture convener with Dundee City Council, yesterday called for a crackdown on the rogue jet-skiers after receiving dozens of complaints.

Mr Farquhar said: "There are a few totally irresponsible jet-ski riders who have been causing problems. The machines they ride are capable of travelling at 80mph, and there is a very real danger they could distress the dolphins that have been using the Tay. People have been enjoying seeing the dolphins all summer, and it would be a great pity if the actions of a few individuals chased them away.

Mr Farquhar has contacted Tayside Police to highlight the issue. Charles Webster, councillor for Broughty Ferry, said that he had witnessed two jet-skiers disrupt a spectacular display of dolphins. Mr Webster said: "The two jet-skiers came very close to where the dolphins were. They couldn't not have seen the dolphins. They didn't appear to stay away from them and they didn't cut their speed either. It's actions like this we need to put a stop to."

Tayjet Personal Watercraft Club, at Broughty Ferry, has a dolphin, porpoise and whale policy. Its guidance states:

"Collisions with boats or jet-skis may result in injury or death of cetaceans; engine noise may interfere with their acoustic communication, prey-detection and orientation systems; and erratic patterns of movement of boats may cause the animals to suffer stress."

Tayjet also advises that riders should not go above five knots when operating near dolphins.

( source: Scotsman)

Read Marine Connection Code of Conduct for boat users