Marine Mammal Spotlight - Hector's Dolphins

Only found in New Zealand’s waters, this distinctive grey dolphin with black and white markings and a round dorsal fin (much like the shape of a Mickey Mouse ear) is the most easily recognised species of dolphin in New Zealand. The Hector’s dolphin is one of the smallest marine dolphins in the world.

Hector's Dolphins - Kaikōura, New Zealand

Hector’s and Maui’s dolphins are known to Māori by other names, including tutumairekurai (special ocean dweller) & aihe.

Hector’s dolphin was named after James Hector who is believed to be the first person to have examined this species.

Two sub-species of Hector’s dolphins exist: the South Island Hector’s dolphin which is found around the South Island of New Zealand, and the Maui’s dolphin which is found off the west coast of the North Island.

Hector’s dolphins are found around the coast of the South Island but distribution is patchy. There is a population of Hector’s around Banks Peninsula area and also we have a small population in Kaikoura. We can see them at times on our tours in a small pod of between 2-3 individuals sometimes up to a dozen.

Guests watching Hector's Dolphins, Things to do in Kaikōura, New Zealand

Interesting facts

Hector’s dolphins are known to live to a maximum of about 20 years.

Like other dolphins, Hector’s use echolocation to find their food. They send out high frequency ‘clicks’ that bounce off surrounding objects and fish, giving the dolphins a detailed picture of their surroundings. This sonar is not used all the time, which may be one of the reasons why the dolphins get caught in nets.

Females reach sexual maturity between seven to nine years of age. They produce just one calf every two to three years, making population increase a very slow process.

Most females only have four or five calves in a lifetime. Calving usually occurs between November and mid-February, and calves stay with their mothers for up to two years.

Traditionally, Māori watched dolphin movements to predict the weather.

A pod of Hector's Dolphins - Kaikōura, New Zealand

Threats to Hector’s dolphin

Dolphins and people have shared our shores and bays for centuries. In recent years, there has been a worldwide increase in awareness of marine mammals and a greater desire to protect them.

Set net fishing poses a major threat to Hector’s and Maui’s dolphins. Like all marine mammals they need to come to the surface regularly to breathe. If they become tangled in set nets, they will hold their breath until they suffocate.

Because these dolphins occur close inshore, often in bays and harbours, they are at risk of being injured by boats. Newborn dolphins are particularly vulnerable as they swim relatively slowly, close to the surface. Some have been killed by boat propellers, when unwary boaties have run them over.

Here are some tips on how you can help them

Close-up of Hector's Dolphins - Kaikōura, New Zealand

QUICK FACTS ABOUT HECTOR’S DOLPHINS

  1. Hector’s dolphin is a marine mammal which means it breathes air, gives birth to live children, produces milk and is a warm-blooded animal.
  2. The scientific name for Hector’s dolphin is, “Cephalorhynchus hectori”.
  3. This marine mammal uses echolocation to search for food and navigate the ocean at night or when swimming in locations that have little to no light.
  4. These dolphins are a protected species and hunting them could lead to fines and/or jail time.
  5. Hector’s dolphin makes up one of around 80 known species of cetacea and one of around 40 known dolphin species.
  6. Aside from Maui’s dolphin this marine mammal is one of the smallest recorded species of cetacea. In fact, some researchers consider this to be the smallest cetacean while others consider Maui’s dolphin to be the smallest.
  7. Natural predators of Hector’s dolphin include sharks and killer whales.
  8. These marine mammals are known as conscious sleepers which means they are always aware of their need for oxygen and never fall completely asleep because they could drown if they don’t remain conscious.
  9. As a species dolphins are extremely intelligent and are able to perform acrobatic feats and complete complex tasks when properly trained. In fact dolphins are one of the most intelligent animals known to mankind aside from chimpanzees, apes and elephants.

 

Hector's Dolphins - Kaikōura, New Zealand

There have been some beautiful sunrises in Kaikōura over the past week, with more sunshine forecasted for the upcoming days too!

Out on our tours we saw semi-residential Sperm Whales Aoraki, Tutu and Tiaki feeding in the Hikurangi Trench as well as Sperm Whales new to our region. When time allowed, we were able to view NZ Fur Seals on Barney’s Rock, a rock thought to be used as a lookout point by early whalers.

This week we had only one juvenile Humpback Whale passing through our waters. It’s coming to the end of their annual migration which only means one thing, the Summer Orca season is approaching us!

We currently have an end of winter sale on at our Retail Store at the moment, a whopping 25% off all hoodies, jackets and merino items! We need to make room for new summer stock, so head over to our online store to get your hands on some winter goodies.

REGULAR, SCHEDULED CLOSURES OF STATE HIGHWAY 1 SOUTH OF KAIKOURA

There is a possibility of short delays and it will be 30km/hour through parts of the route. Inland Route 70 remains open 24 hours a day 7 days a week.

From Tuesday, 22nd August, drivers will need to watch for 28 metre truck loads moving bridge beams to Kaikōura, via the Lewis Pass and the inland road via Waiau/Mt Lyford. The beams are for a new bridge build as well as smaller bridge sites north of Kaikōura. Some minor delays can be expected due to the length of the load and the slow and winding nature of parts of the route. These truckloads are scheduled to follow this inland route until September.

During the cooler winter months it is a good reminder to take extra care on the roads and to check the NZTA website for road updates before traveling.

Progress is continuing to be made on the repair of the Kaikōura Marina, with the modified trailer and public jetty now being used for launching our vessel Tohora. This is due to tidal restrictions and repair work as a result of the coastline lifting by +1.0m. All our berths have now been removed. This is an end of an era but we are excited to see our new and improved marina once it is completed! The use of the modified trailer and public jetty will continue until further notice. It is anticipated that the Kaikōura Marina will be fully restored in October 2017. Below is a graphic (indicative only) of what is being restored at the marina.

Currently our available tour times are based around the tide times on the day and may differ from the tour times originally advertised, please bear with us as we continue to work toward being fully operational again. For an update on the tour times available, please contact our Customer Service team directly either by email on res@whalewatch.co.nz, phone +64 3 319 6767 or free phone 0800 655 121 (within NZ) and they will be able to help you with your inquiry.  Please note we are operating at a reduced capacity in the interim with up to 3 tours available per day. Please contact our team prior to arriving in Kaikōura to secure a space on one of our tours and to save disappointment. 

KAIKOURA BUSINESS UPDATE

Kaikōura is open for business. For latest updates on accommodation, restaurant and retail information please contact the team at the Kaikōura I-Site who will be able to help you find what suits your needs during your stay in Kaikōura. 

TRANSPORT UPDATE

Hasslefree Tours & Canterbury Leisure Tours have daily services from Christchurch to Kaikōura with a return service from Christchurch, as well as Kiwi Experience now having the option of a day tour out of Christchurch for their travellers.

Progress on the work being done on roads (along with harbour repairs) can be found on this dedicated KAIKOURA EARTHQUAKE RESPONSE page provided by the team at NZTA. This page is updated weekly on Friday. Work is also starting to take place on the railway network, please be aware and take care when using rail crossings.

The team at Whale Watch Kaikoura.