Continuity mistake: In the Boogie Wonderland sequence four female penguins can be seen singing behind Mumble and Gloria. When they sing "Who need more then they get." the penguin second from the viewers right has green eyes. Before and after that scene all four penguins have brown eyes. (00:53:40)
Continuity mistake: When Mumble is still a baby, his "bowtie" does not appear until Boss Skua has him pinned down under his foot. Then shortly after, it disappears again, only to reappear when Mumble falls into the crack in the ice.
Continuity mistake: When Mumble is lying on the beach after his chasing of the ship, the jeep vehicle passes very near to his head, about a few inches, as seen by its tire tracks. In the next shot, when the jeep goes in reverse to pick Mumble up, we see the tire tracks very far from the original position.
Chosen answer: 1. Check the end credits in the movie, both Lovelace and Ramon are voiced by Robin Williams. Dan Castellaneta did the voice in the Happy Feet video game. 2. It is true that there was a scene with Steve Irwin as a seagull that was taken out, it's on the DVD. He is the elephant seal that says something along the lines of "One day you're swimming, next day, fun food."