Look Closely: if you look carefully at the scroll that Kowalski rolls out, it has the same picture of Kowalski's plan to capture the humans from 'Zoo Tube".
This is Eggy's and Mama Duck's second appearance on the show. The first time was on "Paternal Egg-Stinct"
This is the second time Kowalski, Private and Rico think Skipper died. The first time was on "I Was a Penguin Zombie".
Mother Duck: Say, where is that fish?
Skipper: Oh, you don't have to worry about him anymore. Sushi? (holds up sushi and there is piles of sushi behind him)
Kowalski's voice seems to have gotten deeper since this episode.
The episode plot and title is a possible parody on the 1974 novel and 1975 movie "Jaws". In this episode, the penguins hear about a deadly fish in the pond so they build a submarine and hunt it down, pretty much like the men do in the novel and film; they hear about a deadly shark out in the ocean and go track it down in a boat.