If we lower the demand by not eating them, we can lower the supply taken from the ocean by self interested businesses trying to maximize profits. This ad increases consumer demand by framing consumption as good. It is far better to minimize our consumption of animals if we care about their lives.
I upvoted the first comment, then realized it was ambiguous and undid it.
I'll go on record to say this advertising of eating living creatures we've purposely killed "so they don't go to waste" is disgusting on multiple levels.