I thought the same as you guys about the return of the shark, seemed wastefull and pointless given that it was alive. I was told though in their defence that once on deck without using the lifting gear to get it back, which would have caused internal damage, there was no way of getting it back. Not sticking up for the guy, just trying to be balanced but I will finish on 'or was it just another pound of flesh to go towards the trip?'
This one is a toughie unless someone else has some expert knowledge.
However, as Tom pointed out it is amazing what is out there, if only we were braver to put the time in to find out what is swimming around our shores, certainly the Channel is full of bait fish this time of year.