In other episodes, Russell can hold his breath underwater, considering that he is a sea otter and has done so in other episodes. In this episode, however, he requires air pumped into a diving suit. This could, however, simply be because he was underwater for a prolonged period of time in this episode. The fact that he had to go to a greater depth also supports the explanation of the diving suit.
The featuring characters in this episode would all later star in A Vicious Cycle, along with Flippy.
When Lumpy opens the door to Russell's house, he says to Russell "Hey! Ready to go?" if one pays attention.
When Russell finds the treasure chest, it is held by what appears to be a human skeleton, hinting humanity's existence.
This is the first TV episode where Lifty and Shifty do not die simultaneously or die the same death.
This episode is the first of two times Lifty and Shifty use actual teamwork in their schemes, with Lifty pushing Russell back while Shifty is down on his hands and knees behind him to trip him so that he actually goes far enough away that he is not a threat. The second is Junk in the Trunk.
Ironically, this episode also contains one of Shifty's biggest betrayals of Lifty along with Milkin' It.
The YouTube thumbnail for Part 1 spoils Cub's death.
Unusually, inside Russell's closet is a pair of woman's high heels.
In an episode of Game of Thrones, a character named Viserys Targaryen is killed when a chieftain dumps molten gold over his head. This is similar to Shifty's death in this episode.
The moral There are plenty of fish in the sea. means that there are lots of potential mates in the world. This saying is often used to console a person who has lost a girlfriend or boyfriend.
Pop looking through the holes in Cub's head where his eyes should be is a nod to the movie Jeepers Creepers.
Disco Bear's yellow submarine is likely a reference to the Beatles' song of the same name.
The scene where Shifty walks away from Lifty and the floor starts to melt might be a reference to the movie Volcano, or the movie The Core.
Cub's death is similar to Disco Bear's eye injury in As You Wish.
When this episode aired along with Doggone It and Concrete Solution on YouTube, the alternate title for the conglomeration of segments was named "The Third Degree". Lifty and Shifty, Pop and Cub, Cuddles, and Lumpy appear in all three episodes. Lumpy and (Debatably) Cub die in all three episodes while Pop survives all three episodes. On the other hand, Lifty & Shifty die twice, Cuddles (Debatably) dies once.