24 Night Cruise sailing from Auckland to Osaka aboard Heritage Adventurer.

Known in birding circles simply as the 'WPO', this expedition incorporates many of the key birding areas in the South West Pacific. First offered in 2007, it is now considered one of the 'must do' expeditions for any birder because of its opportunities to see some of the rarest pelagic seabirds in the world, plus many island endemics. But it is not just for 'birders', the cetacean list can only be described as outstanding, while there is also so much more to enjoy for anyone interested in taking a leisurely expedition cruise through a transect of the Pacific Ocean. Remote beaches, glowing tropical sunsets (with maybe a green flash or two!), flying fish, towering tropical rainforests and wild and remote oceans just to name a few. This season guests have the option to disembark in Kavieng, Papua New Guinea, or continue on a specially priced extension through to Japan.

After departing Auckland, New Zealand, we sail for the rich waters of the Hauraki Gulf where there are numerous speciality seabirds, including the New Zealand Stormpetrel. From there it's northward to Australia’s Norfolk Island with its endemic birds, Norfolk Pines and rugged shoreline. Our next stop is New Caledonia, one of the world’s most biologically interesting islands, where we search for the amazing Kagu and other endemic bird species in the Parc Provincial de la Rivière Bleue/Riviere Bleue.

Heading on through Melanesia we will call in at a couple of the largest islands, Guadalcanal and Bougainville, before cruising across the New Britain Trench, an area known to be extremely rich in cetaceans. As we sail along the coasts of Bougainville and New Ireland, we will look for two rarely seen seabirds: Heinroth's Shearwater and the critically endangered Beck's Petrel which was only rediscovered in 2007, both of which we have seen on almost all our previous expeditions in this region.

Following a further stop at Kavieng, Papua New Guinea, guests have the option to disembark or continue on our extension sailing northward all the way to Japan. We will arrive at the Bonin Islands south of Japan; our route will take us to Chichi-jima, the largest island in the archipelago and where we have observed the critically endangered Bryan's Shearwater. We then intend to backtrack slightly to Haha-jima to look for the weird Bonin White-eye and resume our northwards journey to Tori-shima Island where we hope to get great views of the Short-tailed Albatross before we arrive at our last port of call in Osaka, Japan, where our voyage concludes.

This expedition is accompanied by some of the best pelagic birding guides in the world who have extensive experience of the seabirds of the West Pacific and have visited the islands we will be landing on multiple times. Birding starts at dawn and finishes at sundown. Our guides are there throughout the day to assist you and the 'reading of the bird list' each evening is legendary for its detail and discussion. This is one birding expedition you can't afford to miss.

Heritage Adventurer is a true pioneering expedition vessel of exceptional pedigree. Often referred to as the 'Grande Dame of Polar Exploration' due to her celebrated history and refined design, she was purposebuilt for adventure in 1991 at Finland's Rauma shipyard and specifically designed for Polar exploration.

Setting a peerless standard in authentic expedition travel, Heritage Adventurer (formerly known as MS Hanseatic) combines the highest passenger ship iceclass rating (1A Super) with an impressive history of Polar exploration. Having held records for the most northern and southern Arctic and Antarctic navigations, and for traversing both the Northwest and Northeast Passages, makes Heritage Adventurer perfect for pioneering New Zealand-based Heritage Expeditions signature experiential expedition travel.

Originally designed to accommodate 184 guests, Heritage Adventurer now welcomes just 140 expeditioners ensuring spacious, stylish and comfortable voyages, while a fleet of 14 Zodiacs ensures all guests are able to maximise their expedition adventure. Heritage Adventurer proudly continues our traditions of exceptional, personalised expedition experiences as Heritage Expeditions flagship.

Every year Heritage Expeditions voyages with small groups of between 18 and 140 intrepid travellers to some of the most unique and remote islands, coasts and shorelines on earth aboard their expedition ships Heritage Adventurer and Heritage Explorer on voyages ranging from 5 – 28 days.

Founded in 1985 by the Russ family in Christchurch, New Zealand, Heritage Expeditions is still proudly family-owned and operated. Contributing to conservation through experiential learning and providing funds for research and management, they are pioneers in environmentally-responsible expedition travel offering intimate group excursions to Antarctica and the Subantarctic Islands, through the Pacific, and around New Zealand on their purpose built expedition ships.

Each expedition is meticulously planned and led by a team of botanists, ornithologists, naturalists and experts in their field, ensuring guests maximise every opportunity to learn, discover and experience as much as possible, while minimising the impact of their visit and returning as ambassadors for these very special places.