According to the Department of Conservation, New Zealand is home to an estimated 150–200 individual orca, which travel long distances throughout the country's coastal waters.
"Orca are typically encountered in family groups or pods. Pods are usually formed for life and can result in the development of unique dialects."
Department of Conservation rules around orca:
• Do not swim within 100m of a killer whale/orca.
• Your vessel should not be within 50m of a killer whale.
• There should be no more than three vessels within 300m of any marine mammal, additional vessels may watch from 300m.
• Your vessel should approach orca from behind and to the side.
• Do not circle them, obstruct their path or cut through any group.
• Operate your boat slowly and quietly at "no wake" speed when within 300m of a killer whale.
• Avoid sudden noises that could startle the animals.