Watch dolphin superpod...
9 January 2013 Last updated at 18:17 GMT
Tourists travelling on a ferry between Ireland and Wales had a huge surprise when they spotted hundreds of dolphins.
The superpod of up to 500 dolphins swam around the ferry "in all directions" as it neared the Pembrokeshire coast.
The Sea Trust said the pod was made up of common dolphins and they may have been feeding on a giant shoal of fish.
It was a clear morning with calm seas so the tourists on board the ferry had a great view of the animals as they came to the surface to breathe.