Bill,
Undoubtedly NOT net trawled.
The photo was taken by my dive buddy last week when we dived / snorkled with SIX Whale Sharks (and big f**k*rs they are too).
I find it difficult to put to words how magnificent these creatures are. They are the largest fish species and are plankton eaters, with a mouth similar to a basking shark or small whale.
This little beauty was the size of a single decker bus.
.....oh well, off topic again.