I watched two Ospreys fishing last week. They were unsuccessful but I took some photos before they moved on to better fishing grounds. They were about 600 meters (660 yards) away, if I read the Google map correctly, when I took these shots:
The Double-crested Cormorants in the last shot seemed to be interested. The gull? Not so much.
They moved closer and flew overhead as they left. They hovered for a while but did not dive. So I got some nice hovering and flyover photos, but no diving or splashing.