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Our People

The IAATO team is comprised of the Secretariat, the Executive Committee, 10 Committees and eight Working Groups. Read more about who we are below.


Gina Greer

Executive Director

Previously a partner at global business advisory and consulting firm, Deloitte, Gina brings to IAATO more than 20 years of experience interpreting regulatory and business issues, identifying challenges and developing operational strategies to address them; qualities which will benefit IAATO as it continues to manage the challenges ahead.

A recent graduate of Stony Brook University, School of Marine & Atmospheric Sciences where she obtained a Master of Arts in Marine Conservation and Policy, Gina is also a research associate at Gotham Whale, coordinating with organizations that maintain humpback whale fluke catalogs on the east coast of the United States to further develop understanding of migration behaviors. In addition, she volunteers at Atlantic Marine Conservation Society.

She is based at IAATO’s offices in Rhode Island, US.

Lisa Kelley

Director of Operations & Government Affairs; Deputy Executive Director

Lisa joined IAATO in 2016 and is responsible for the field operations aspect of IAATO, developing industry best practice and guidelines for field operations.

Lisa began working aboard expedition ships in 2000. Most at home in the polar regions, she has worked as undersea specialist, logistics coordinator, divemaster and expedition leader in the Arctic and the Antarctic. She was also the station manager at Palmer Station for the United States Antarctic Program during the austral winter of 2010. Passionate about the future of polar tourism, Lisa began representing operators in 2004 at the annual IAATO conferences, sits on the IAATO Field Operations Committee, and contributes to AECO (Association of Arctic Expedition Cruise Operators). Additionally, Lisa is a member of the board for FOSGI (Friends of South Georgia Island). Her passion and commitment to safe and environmentally friendly travel lead her to the position IAATO Head of Operations.

Lisa’s vast experience of diving “the Ice” led to her publishing Below Freezing: The Antarctic Dive Guide in 2006, now in its third edition. Her underwater experience and exploration of the Polar Regions led to her acceptance into the Explorers Club.

Colleen Sweeney


Colleen came to IAATO from the precious metal jewelry manufacturing industry in March 2019 and oversees the financial record keeping of the Association.  Educated at The Community College of Rhode Island and Bryant College, she holds a Bachelor’s degree in Accounting and qualifications in computer programming.

Before diving into the world of responsible polar travel, Colleen saw how conscientious jewelry manufacturers worked together to develop standard practices; recycling and refining precious metal material, treating waste water and air emissions before dispersing them back into the environment; a post which gave her an understanding about how industry collaboration and safe and responsible practices can support the environment.

Colleen grew up in Rhode Island where she continues to live today.  She spends her free time with friends and family and keeping up with five nieces and nephews. She loves the mountains of New Hampshire, the beaches of Rhode Island and the rich history and cultural diversity of the state’s cities.

Janeen Haase

Director of Governance & Finance

Janeen joined IAATO in 2013 and is responsible for IAATO’s corporate governance and administration, which includes ensuring the association is proactive against and protected from any potential anti-trust violations and liability issues, as well as ensuring human resources and benefits compliance. In addition, she oversees IAATO annual meeting planning and manages the association’s Mandatory Observation Program, finances and budgets and the membership application process.

Prior to joining IAATO, Janeen worked as a senior program manager in International Development for Global Health and Global Literacy NGOs and trade associations in Washington, DC for 10 years. She managed high-level projects for international donors, including: The United States Agency for International Development (USAID), The Hewlett Foundation, The United Nations Development Programme (UNDP), ChildFund, and several Ministries of Education. She was fortunate to travel extensively in her work, including many countries in the developing world.

Janeen has lived and worked overseas in Germany and France and speaks both languages. She grew up in Rhode Island on the water with a father who was an old salty sailor, and had a choice – love to sail or stay home. She chose to love sailing!

Amanda Lynnes

Director of Environment & Science Coordination

Amanda’s role is to support IAATO in meeting environmental obligations arising from its mission, the Antarctic Treaty System and other international agreements. This includes coordinating research and monitoring efforts and citizen science.

Her Antarctic career began in 1996 with the British Antarctic Survey (BAS) as a penguin biologist and field assistant for the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR). She established long-term seabird monitoring projects at Signy Island, South Orkney Islands, and at Port Lockroy on the Antarctic Peninsula. Her research involved studying the foraging behaviour of Adelie and chinstrap penguins, the findings of which fed into the development of the first CCAMLR Marine Protected Area in Antarctica.

Amanda’s passion for communicating Antarctic issues and science led her to a position as press officer in the award-winning Press, Public Relations and Education Department at BAS and a project coordinator for the UK Antarctic Heritage Trust. Outside of the Antarctic community, she has worked for the Royal Society for the Protection of Birds (RSPB) at busy tourist destinations in the Peak District National Park, UK.

She was first introduced to IAATO in 2002 while working at Port Lockroy. Impressed by IAATO’s ethos, core values and potential for creating Antarctic ambassadors, she went on to work for an IAATO member operator and eventually the Secretariat in 2013. Her experiences have led her to appreciate the value of polar tourism when it is expertly managed. She believes protecting our wild places depends on giving people opportunities to learn while exploring them first hand. Amanda lives with her family in the English Lake District.

Hayley Collings

Director of Communications

A former local newspaper journalist, Hayley moved into communications and PR as a UK police press officer in 2010, supporting Hampshire Constabulary’s road traffic, major incident, and serious and organised crime teams. She then joined the Association of Chief Police Officers (now NPCC) where she became Acting Director of Communications; managing crisis and reputation issues within the UK Police Service and working with 10 Downing Street, The Home Office, COBRA and 44 police forces across England, Scotland, Wales and Northern Ireland.

A member of the Chartered Institute of Public Relations and an advocate for ethical practice and transparency, Hayley joined IAATO in October 2017 to support and strengthen the Association’s mission of promoting the practice of safe and environmentally responsible private-sector travel to the Antarctic.

Hayley loves travel, music and being outdoors, and has hiked several long distance trails across the UK. She and her family live in Sheffield, England.

Vicky Dowdeswell

Digital Communications Manager

Vicky’s background lies in digital project management, where she has led teams in the successful building of large-scale websites, eCRM programmes and data platforms for well-known international brands. As a ScrumMaster, Vicky specialises in the development and delivery of complex technical and branding solutions, with a particular focus on membership organisations.

Alongside her work in tech, Vicky has also worked across marketing, media communications and business development for sustainable small-ship polar expedition companies’ and international exploration & scientific expeditions to Antarctica. Here, cultivating partnerships with world renowned polar institutions, high profile explorers and representing at major industry events ignited her desire to further engage with the polar regions.

Born into a family of polar scientists, and having visited Antarctica in her previous roles, Vicky is proud to be able to combine her hard-earned technical abilities with her enthusiasm for Antarctic conservation within her role as IAATO’s Digital Communications Manager.

Based in South-west England, Vicky loves nothing more than enjoying a sunny day in the garden with her young daughter.

Liz Gutzler

Event Manager

Liz joined IAATO, as an Event Manager, in December 2022. Prior to joining, she lived in United Arab Emirates (UAE) where she supervised the events and community relations office at the US Consulate General, Dubai. She also spent a few years in Berlin, Germany where the influence of the local culture helped grow her interest in international experiences, love of travel, and awareness of sustainability. Liz’s professional experience in combination having lived in multiple US States and on several continents increased her interest in working for IAATO as an international organisation promoting safe and environmentally responsible travel – ideals that resonate with her.

Passionate about health and wellness, Liz enjoys spending time outdoors, especially with family and friends. As a native New Englander, Liz is enjoying getting back to her roots as she now lives in Rhode Island with her family.

Erin Delaney

Operations Administration Manager

Erin graduated from Johnson & Wales University in 2016 with a Bachelors degree in Travel and Tourism. She spent time during college working in various parts of the tourism industry including working at TF Greene Airport in Rhode Island and planning and executing a trip to Peru.

Before joining IAATO’s Operations team in July 2018, Erin worked for Whole Foods Market, which really brought out her passion for sustainability and learning about working for a company that promotes sustainability on different levels with stores, suppliers and the community.

IAATO perfectly combines Erin’s passion for tourism with sustainability, as well as enabling her to be a part of protecting the Antarctic environment.

When she isn’t at her desk, you can find Erin exploring her home state of Maine – hiking, biking, or walking the beach with her dog.

Stella Giangarra

Assistant Operations Manager

Stella is a graduate of Stony Brook University, School of Marine and Atmospheric Sciences, having completed her Master’s degree in Marine Conservation and Policy.

Combining her passion for the ocean, environment, and educating others, Stella joined IAATO’s Operations Team in September 2022.

Stella grew up on Long Island and frequently went on boat trips with her family, which sparked her passion for marine life. In her free time, you can find her at the dog park with her dog, Zeus, volunteering for beach clean-ups, or on the water with her family.

Hayley Fier


Hayley graduated from Tulane University in 2022 with a B.S. in Environmental Biology and Anthropology. She is currently pursuing her Master’s degree in Marine Conservation and Policy at Stony Brook University. 

Before joining IAATO as an intern in January 2023, Hayley spent her time interning at zoos and aquariums, learning about husbandry for animals in captivity and educating the public about conservation. Hayley is excited to work with IAATO to protect the wild counterparts of the animals she loved caring for while also learning more about sustainable marine ecotourism.

Hayley lives in Brooklyn, New York with her parents and two cats, Ellie and Bodhi. 

Executive Committee

Tudor Morgan

Committee Chair

Tudor has always had a passion for polar places. After many Arctic and Alpine expeditions while studying Geology at Manchester University he first went South with British Antarctic Survey wintered as a Field Guide before becoming became Field Operations Manager. After six years he moved on to work for the Antarctic Heritage Trust managing the operation at Port Lockroy and overseeing the conservation of other historic sites.

Before joining the full time staff at Hurtigruten Expeditions he was Operations Manager at IAATO.  He has represented Hurtigruten at IAATO since 2016 and  joined the Executive Committee in 2019. He was elected to the role of Executive Committee Chair in 2022.

He has been awarded the Queens Polar Medal for outstanding service to Antarctic science and Heritage.

John McKeon

Committee Member

John has been involved in responsible Antarctic travel since 2004 and an active member of IAATO since 2010. He joined the Membership Committee in 2014 and serving as chair from 2017 to 2021 when he was elected to IAATO’s Executive Committee. John has also served on the Tourism Growth Working Group. He is the President/CEO of IAATO Member Operator Polar Latitudes.

Deciding long ago that what you love and what you do should be the same, John has been working in the adventure travel world for over three decades.  Starting out in North American and European bicycle touring before moving into a career in the safari world and, for the last two decades, in responsible polar tourism.

John believes that leading safe and environmentally responsible expeditions to Antarctica can create ambassadors who will champion its continued protection when they return home.

Stefan Kredel

Committee Member

Stefan, Senior Director of Expedition Product and Itinerary Development with IAATO Operator Silversea, was appointed following a vote at IAATO’s 2023 Annual Meeting, held in Hamburg, Germany.

After growing up in Murnau, southern Germany, Stefan went on to train as a paramedic before beginning his love affair with traveling to precious places; cycling solo through India, Nepal, New Zealand and South America. In Nepal he walked the Annapurna Circle Track, in New Zealand he hiked various National Parks and in Peru he followed the Inca Trail to Machu Picchu.

After studying Geology and Palaeontology at Ludwig Maximilian University of Munich, he receiving his Master’s degree shortly after beginning is career as a lecturer aboard expedition  ships. His first voyage took him to Antarctica –and he has returned to this fascinating continent nearly every year on several occasions both as a lecturer and as Expedition Leader.

His knowledge also extends to the North with visits to Svalbard, Jan Mayen, Iceland, Greenland, Hudson Bay, the Northwest Passage, Alaska’s Inside Passage, the Aleutians, the Kurils, Kamchatka, the Northeast Passage, Franz Joseph Land, and the very north itself –the North Pole.

Stefan joined Silversea Cruises in 2014.

After 20 years living in Buenos Aires, Argentina, he relocated at the beginning of 2021 to Miami, USA.

With his EC colleagues Stefan leading the organisation in matters of forward strategy, environmental and operational best practice and managing for growth, making decisions on behalf of the membership where appropriate.

Diana Galimberti

Committee Member

Diana joined IAATO Operator Antarctica21 in 2005 but was connected with Antarctica much earlier, since leaving Italy and cross the Atlantic Ocean towards Patagonia. Driven by curiosity and passion for exploration of remote sites and new projects, in the early 90s she had the chance to be involved when the first Russian ships reached Ushuaia and to cooperate with the new government of Tierra del Fuego in designing a strategy aimed at developing the southernmost city as an international Antarctic gateway.

Diana had the privilege to experience her Antarctic connection from a scientific perspective by serving the Italian Antarctic project within a program of the European Space Agency for ozone research in middle and high latitudes.

Since 2005, she has been growing with Antarctica21 where she is now EVP Operations and Product.

Diana has been active in several IAATO committees and working groups. She participated in the foundation of the Antarctic Gateway committee where she has served as co-chair from 2018. With her election to the Executive Committee in 2022, Diana looks forward to sharing her long-lasting commitment in protecting the values and the reputation of the industry while dealing with the multiple challenges that the Antarctic tourism growth is expected to take along in the coming years, with the same commitment and passion as in early days.

Sibrand Hassing

Committee Member

Sibrand Hassing is Director, Fleet Operations Europe for the Holland America Line (HAL). As well as a decade as a Master Mariner,  including operating in ice covered waters off the Baltic and St. Lawrence, Sibrand worked for 21.5 years for the Dutch Maritime Authorities as senior policy adviser on cargo safety, port state control, ISM Code, STCW/safe manning, Polar Code and Climate Change. Furthermore, I was a lead-auditor of IMO’s Member State Audit Scheme.

In 2013 Sibrand joined HAL, later representing the Operator at IAATO meetings as well as participating in several IAATO Committees.  He has also served on the IAATO delegation at IMO meetings. He joined the IAATO Executive Committee in April 2022.

Brandon Harvey

Committee Member

Brandon Harvey has been involved in Antarctic tourism since 2003 when he joined his first expedition as an adventure guide. Working full time on expedition vessels for the better part of a decade, Brandon demonstrated his proficiency in developing the impeccable safety-standards, exceptional guest experiences, superior leadership training programs and engaging educational programming that are the cornerstones of his career.

Since 2011, Brandon has been directing operations for tourism companies operating in British Columbia, Alaska, Antarctica and joined EYOS Expeditions in 2018 as Director of Expedition Operations and Program Development, with global operations. In 2014 Brandon joined IAATO as a member representative and has served on multiple committees and working groups. In these roles, Brandon has championed the development of polar guide qualifications and implemented one of the first dedicated passenger-lead citizen science programs. Brandon believes Antarctic Ambassadors are created through passionate and competent guides sharing their passion and knowledge of the Antarctic, but also through experiencing the awe of Antarctica first hand.

Brandon’s career has only served his passion for photography and videography, with multiple credits to his name. In addition, Brandon’s expertise as a marine ecologist and environmental scientist is supported by a Master of Science in Environmental Practice.

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