Four American victims, who were found relatively quickly after the crash, have also been identified as 46-year-old pilot Randy Sullivan, 62-year-old Cassandra Webb, 39-year-old Ryan Wilk and 46-year-old Louis Botha. One person was reported missing after the collision.
Global Affairs Canada says Canadian consular officials in Seattle were in contact with local authorities to gather additional information and provide assistance as needed.
All of the planes' passengers arrived in Ketchikan on the cruise ship Royal Princess during a seven-day trip between Vancouver and Anchorage, Princess Cruises said.
The California-based company said recovery efforts for the two missing bodies, belonging to the Canadian and an Australian, were ongoing this morning.
The planes crashed into the icy cold waters off a southeast Alaska inlet near Ketchikan, a popular destination for cruise ships in Alaska.
One passenger on the larger plane died, as did two passengers and the pilot on the smaller plane, Princess Cruises said in a statement.
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The planes were carrying passengers from a cruise ship which departed from Vancouver on Saturday.
Ten people with injuries from the incident were taken to PeaceHealth Ketchikan Medical Center, according to hospital spokeswoman Mischa Chernick.
Both planes were carrying guests from Royal Princess, which is now sailing a seven-day Voyage of the Glaciers cruise that departed Vancouver on Saturday, May 11 for Anchorage, Alaska.
One plane, a de Havilland Otter operated by Taquan Air, was carrying 10 guests from the cruise ship as well as a pilot, and was returning from a tour of the nearby Misty Fjords National Monument, named for the low clouds that cling to sheer cliffs rising from the fjords.
"All of us at Princess Cruises are deeply saddened by this tragic news and we are extending our full support to the investigating authorities as well as the travelling companions of the guests involved". In Ketchikan Medical Center, three are in good condition and three have been discharged. Taquan Air purchased the assets of Promech a year after the crash, and now employs three pilots who worked for Promech, a company spokeswoman said.
All 14 passengers on the two seaplanes came from the cruise ship, Royal Princess.
The NTSB team began investigating on Tuesday and is unlikely to determine the cause during the week it will spend at the scene, NTSB board member Jennifer Homendy told a news conference.