Orca | Maori name kākahi / maki
The killer whale/orca (Orcinus orca) is well known and can be identified relatively easily by its distinctive black and white markings and very tall, prominent dorsal fin. They can grow up to 9 m in length, with male dorsal fins reaching higher than a metre.
Orca flippers are large and paddle-shaped and overall the body is robust. They are acrobatic and are commonly seen breaching and flipper-slapping.
Females and males differ in that males are longer and bulkier than females and females have smaller, more curved dorsal fins, and smaller flippers.
Where to find orca
Orca are the most widely distributed mammal on earth with the exception of humans. Its distribution is patchy however and it is more commonly seen at the poles and in cooler waters.
They prefer deeper water but can be found in shallow bays and estuaries, and in inland seas.
Orca can be found all throughout New Zealand's coastline.
Diet and foraging
These dolphins have an extremely diverse diet and are the only known cetaceans that regularly prey upon other marine mammals. Attacks or kills have been documented on more than 35 species, including blue whales.
Fish species are also important in their diet, such as salmon, tuna, herring, cod, sharks and rays. Squid, octopus, seabirds and sea turtles are also eaten the average-sized killer whales may eat about 227 kilograms of food a day!
Orca hunt cooperatively and are even known to intentionally strand themselves on beaches temporarily in order to catch seals. Due to the orca's sophisticated hunting techniques and intelligence, maori chiefs were sometimes likened to kākahi,
Females give birth to their first calf between 11 and 16 years of age and tend to do so every five years for their 25-year reproductive lifespan. The gestation period is 15-18 months and calves are nursed for at least one year.
Females are known to live up to 80 or 90 years. Males reach physical maturity at about 21 years and live for a maximum of 50-60 years.
"The entire tour from start to finish was incredible. There was a constant stream of activities and you could pick and choose what you wished to do. We shot...
"To start the crew aboard was absolutely fantastic and easy going. Just having them be the leaders of our stay made it very relaxed as if you were traveling...
"Anyone considering this, consider no more and just book it! This was one of my first experiences solo travelling up in the north after a tour and as...
"The crew are wonderful and swimming in the fluorescent algae was one of the most surreal and beautiful moments of my life. Highly highly recommended!"
"The crew on The Rock are so friendly! The boat is an old ferry and has a lot of character. I’m sure there are plenty of other positive reviews, so...