ECN chief executive Akvile Marozaite said the trade body was “delighted” to have three “diverse” expedition cruise lines within its organisation.  

“From the South Pacific to the polar regions, these companies embrace the extraordinary and exhilarating world of expedition cruising,” she added. 

Scenic has two ultra-luxury expedition ships operating ocean itineraries. The first joined in 2019 and the second launched last year. 

The vessels have a Polar Class 6 rating, a strengthened hull, a custom-built oversized zero-speed stabilisers. 

Scenic said: “[Scenic Eclipse I and II] navigate through the roughest of waters comfortably, no matter the conditions.” 

Nichola Absalom, Scenic UK managing director, sales and marketing, said: “We have been impressed with the momentum that the Expedition Cruise Network has built to date.” 

Luxury small-ship operator Aqua Expeditions operates river cruises on the Amazon, the Mekong and in the Galapagos Islands. Its newest itinerary calls into The Asmat in Indonesia. 

Francesco Galli Zugaro, chief executive of Aqua Expeditions, said: “I have always believed in the power of collaboration. We at Aqua Expeditions are excited to have joined the Expedition Cruise Network as it will demonstrate our commitment, experience and allow us to be a part of a well-established community dedicated to preserving the world’s most biodiverse and culturally significant destinations through responsible exploration.”

Aranui Cruises, founded in 1984, offers mixed cargo-passenger itineraries across the South Pacific. 

Romina Wong, Aranui Cruises executive director, said: “We look forward to the opportunities it will provide for us to benefit from great visibility and qualified audiences by directly reaching travel trade professionals and increasing sales with their customers who are looking for an adventure cruise beyond the ordinary.”