reply to post by seagull
big fish (mammals) eat smaller fish. If you're reeling in a small fish, and a larger predator is in the area, you might wind up hooking that larger
fish. I have a video, somewhere, of my wife pulling in a 4 foot long fish in indonesia (some kind of mackerel I think) and, after a nice long fight
she suddenly gets pulled hard and then she had to be held onto by the crew as something massive was now on the line. After a few minutes of struggle,
the line gave and my wife pulled up a little more than half the fish. The crew started running around the boat, getting the gear stowed. When I
asked what the problem was they point into the water and gigantic tiger shark was swimming alongside the boat. The shark was about the same size as
the boat.
We left in a hurry.
I've caught striped bass with small fluke on the line.
bluefish the same way
Shark while reeling in a bluefish etc
Big fish eats smaller fish, plain and simple.
Killer whales are highly intelligent so, it's easy to assume, they have some basic understanding of the "caught" fish and how to get what they want
without getting caught.
Dolphin eat the same thing as tuna and bill fish and, yet, nobody every hooks them. Matter of fact, dolphin will lead fishermen to their prey. I saw
this first hand. Followed a small pod that was, clearly, guiding us. No sooner did they go deep than we hooked the first marlin. A friend of mine
had the same experience only he was led to tuna.
Killer whales and dolphin are smart mammals living in a world of less bright fish.
:wow 
