Regarding Conger, I was fishing Cullernose one day with my mate when my rod tip just bent over slowly, then pulled the rod straight out of the rest. When I grabbed hold, line was trickiling off my reel, but could I hell stop it. This went on for a good few minutes until whatever it was eventually bit me off.
The only things that makes me think against it being a seal is that the line was literally trickling off my reel, and that we\'d never seen a seal all day.