I know dolphins and porpoises are different, but work with me here
Every time I think that Plants vs Zombies: Garden Warfare can't possibly do anything else to leave me speechless, it goes and does just that. Maybe I should've dropped the expectation of any semblance of rationale the very second this game got announced. In fact, I'm going to do that right now.
Regardless, this live-action advertisement chides you to "put down the shotgun, pick up a dolphin." I'm not sure exactly where dolphins fit into the scheme of the on-going struggle between botanical life and the undead, but hey, I'm going to stick by that first paragraph and not worry about it.