What cultures invented the kayak? What cultures are native to New Zealand? Is there overlap between #1 and #2?
Kayak
Kayaks were developed by native peoples to hunt in northern waters of the Arctic Ocean, North Atlantic, Bering Sea and North Pacific.  New Zealand is in the Southern Hemisphere. The native Maori people of New Zealand arrived there in canoes.
small boat propelled with a double-bladed paddle
Is the kayak a traditional boat in New Zealand?