The beginning of this episode is filmed in Gravenhurst, Ontario at Gull Lake Park.
Continuity-wise, this episode features Martin and Chris using the Miniaturizer for the very first time. Also, when the moment featuring Jimmy tossing the harness and straps to Aviva is looked closely, it can be noted that they were hanging on Chris's creature power suit while it was jammed in Walrus mode. This would openly confirm that "Mystery of the Squirmy Wormy" took place directly after "Polar Bears Don't Dance".