Orca in Scapa Flow

The pod of about 6 orca has been in the Flow for several days now and today I saw them for the third time. Still very far out, though. From Scapa pier I watched for about 15 minutes before I saw them. One of the tugs headed out toward the oil tankers and I thought they'd scoot but the boat actually seemed to arouse their interest and there was some spy-hopping. Another shot in extra.