In the US release, the assistant's name is spelled "Katherine" (sometimes called “Kat”).Walker, Torrey (January 24, 2008). "Endless Ocean". 1UP.com. Archived from the original on June 3, 2016. Retrieved July 1, 2016.
Nicksarlian, Greg (February 11, 2008). "Endless Ocean - WII - Review". GameZone. Archived from the original on February 21, 2009. Retrieved July 1, 2016.
In the US release, the assistant's name is spelled "Katherine" (sometimes called “Kat”).Walker, Torrey (January 24, 2008). "Endless Ocean". 1UP.com. Archived from the original on June 3, 2016. Retrieved July 1, 2016.
Nicksarlian, Greg (February 11, 2008). "Endless Ocean - WII - Review". GameZone. Archived from the original on February 21, 2009. Retrieved July 1, 2016.
Kolan, Patrick (January 15, 2008). "Endless Ocean AU Review". IGN. Archived from the original on May 21, 2014. Retrieved July 1, 2016.
Casamassina, Matt (January 22, 2008). "Endless Ocean Review". IGN. Archived from the original on August 20, 2016. Retrieved July 1, 2016.