Therese Alander and Marcus Larsson from Uddevalla were surprised by dolphins during a boat trip in Havstensfjorden.
The couple was heading to refuel at Vindö Marin when they spotted the animals. Four to five dolphins played near the boat and followed them for nearly a quarter of an hour.
Therese Alander, 33, described the experience as magical. She had never seen dolphins in the wild before.
On the way home they saw another dolphin in Byfjorden. Marcus Larsson, 34, was also on the trip.