Video: Dolphins' spectacular display
Aberdeen in the north of Scotland has become known as one of the best places in Europe to watch dolphins.
The RSPB's Mairi Cowan said: "Aberdeen is a brilliant place to come to see bottlenose dolphins."
"You can often see them playing and feeding at the harbour entrance."
"I've seen them there many times and have always felt an overwhelming sense of privilege and amazement."
The charity are launching a season of dolphin watching sessions throughout the summer.