OFFICIALS at an animal welfare charity have urged people to keep away from dolphins after one of the marine mammals was pictured surrounded by jet-skiers.

Representatives of the Dorset Wildlife Trust say water users should take care to avoid causing marine wildlife 'disturbance and distress'.

Emma Rance, marine conservation officer for the trust, said concerns have been raised over a young, possibly male, solitary bottlenose dolphin. The creature has been spotted on a number of occasions, including on the recent Dorset Wildlife Trust Oceans Cruise in Purbeck.

On a separate occasion, the charity was told of jet-skis and boats approaching and circling the dolphin off Swanage.

Some dolphins may approach boats and people, bow-riding and breaching out of the water repeatedly, but watercraft should keep back a good distance and avoid surrounding dolphins to prevent any risk of collision or prop injury, Ms Rance said.

If a dolphin approaches, the charity recommends that water users 'maintain a slow and steady course' and don't make any sudden or erratic movements.

"Every dolphin I have had the pleasure of seeing in Dorset is a marvel and I would love every person to share that experience," Ms Rance said.

"However, we must all be mindful that these mammals are highly sensitive. One wrong move in a boat can have catastrophic consequences, not just physically but psychologically for them.

"Most people just want to get a closer look or a photo, and do not intentionally want to harm these creatures, so I urge everyone to familiarise themselves with the Code of Conduct and share it far and wide.

"All cetaceans are protected by law under the Wildlife & Countryside Act 1981."

For more information on the Cetacean Watching Code of Conduct, or to report dolphin harassment, visit dorsetwildlifetrust.org.uk/dorsetdolphins

Sightings of dolphins or other marine mammals can be made to trust via their Facebook page.