Technically those are Risso dolphins. Don't think getting technical about the tools was of much use, but I did post links with info about them.

I don't expect ppl share my view on this, we are all different.
Those dolphins are not in danger of exctinction, and they do consume almost all of it, posted links about it.
I have a problem with the way they do it.
I also think it is useless looking at the numbers. I doubt any of us would choose between 30 seconds or 5 seconds of dying time (while looking at your organs) - for us or for family members as well, how about giving the same consideration for animals ?

I think the 1.4kg of brain we carry should be more than enough for finding better ways to treat your prey. There's a line between hunting and being barbaric. I have respect for hunters that do give that consideration to prey, the ones that aknowledge the harm they make and try to minimize inflicted pain. 30 seconds to 2 seconds is a huge difference. How about thinking of that difference when it comes to humans, loved pets, should it be different ?
Anyway, I'm truly said that a lot of ppl have no problem with the method involved.