She said there were often other types of whales visiting but it was unusual to see a sperm whale.
They had seen other wildlife like humpback whales and dolphins in the area before.
"We get orcas off and on quite regularly, they come in quite close ... we've got a couple of sea elephants at the moment."
There were also plenty of seals and their pups around the coast, she said.
"The wild life here is quite impressive."
Sperm whales normally prefer deep water and are usually found offshore and in areas with submarine canyons, such as Kaikoura, where they're present all year round.