The word "Caalum" may appear to be misspelled at first glance, but it is actually a correct alternative spelling of the name "Callum." In IPA phonetic transcription, "Callum" is pronounced as /ˈkæləm/, and the double "a" in "Caalum" represents a prolonged vowel sound. Therefore, the proper pronunciation of "Caalum" would be /ˈkæːləm/. While not used as commonly as the traditional spelling, "Caalum" is a valid spelling that can be found in some regions or cultures.