Expedition Team

Our team is the key to your incredible adventure


Explore the islands and undersea in the company of top experts. Benefit from the knowledge of our Galápagos Island travel guides —team specialties include marine and terrestrial biology, botany, geology, and more—and passion for the Galápagos to observe and understand more of all you’ll see.  And enjoy their company; you’ll find them highly engaging and fun to share a drink or dinner with, as well as a trail hike.


Meet the expedition team for this departure

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  • Alexandra Widman

    Undersea Specialist
    Alexandra grew up on the southeast coast of the United States. She has a deep love for the ocean that stems from her childhood spent surfing, kayaking, diving and fishing on the Intracoastal Waterway. Alexandra has lived on San Cristóbal Island for the past 6 years, having fallen in love with Galápagos the moment she arrived as a fledgling marine ecologist. She holds a bachelor’s degree in marine biology and a master’s in environmental science and management from the University of California Santa Barbara.

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  • Donald Johanson

    National Geographic Staff
    Dr. Donald Johanson, one of the most accomplished scholars in the field of human origins, is best known for his 1974 groundbreaking discovery of the 3.2 million- year-old skeleton known as Lucy. He and co-author Maitland Edey won the National Book Award in Science for their 1981 book Lucy: The Beginnings of Humankind, which described the new species, Australopithecus afarensis. Today, A. afarensis occupies a pivotal place on the human family tree as the last common ancestor to later Australopithecines and to our own genus Homo.

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  • Fabian Bucheli

    Naturalist
    Fabian Bucheli studied at the German School in Quito, graduated from the University of California with a bachelor of science in administration, and earned a master’s degree in international management from Thunderbird School of Global Management in Arizona. He has studied in Germany, France, Belgium, and Austria and is fluent in German, French, English, and Spanish. He has always been in love with nature and conservation. Explaining abstract concepts became second nature as a teaching assistant in biodiversity and evolution (University of Nevada, Las Vegas) while working towards a PhD in environmental risk management.

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  • Gianna Haro

    Naturalist
    Most of Gianna´s memories seem to be dreams, made on flawless white sandy beaches with black lava rock contours and gorgeous turquoise ocean waters. Most of it happened while barefoot, in an enchanting place that some people regard as an ideal natural laboratory, the Galápagos Islands. For her it was home. Gianna grew up going to the beach nearly every day, snorkeling in crystal clear waters, playing with wild flowers, having sea lions steal her ice cream, observing marine iguanas, and identifying invertebrates. The latter was by no means technically accurate—she dubbed each new discovery with its own made-up scientific name. At some point during those early years, being an observer became an innate ability and she knew she wanted to be a biologist. 

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  • Javier Carrion

    Naturalist
    Javier grew up on Santa Cruz island where his grandparents first arrived in the 1940´s. Veritable pioneers, his grandparents settled in the highlands where they found a place to raise their children.

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  • Jonathan Aguas

    Naturalist/Certified Photo Instructor
    Jonathan was born into one of only a handful of families that reaches back five generations in Galápagos, in the town of Puerto Baquerizo Moreno, on San Cristobal Island. He first left the islands when he won a highly-coveted scholarship to finish his studies in the U.S.  This was the start of his life-long passion for science and languages. He earned a bachelor’s degree in integrative biology from the University of Florida and later spent time in Europe, where he learned French. He is now fluent in English, French, Portuguese and Spanish.

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  • Paula Tagle

    Expedition Leader
    Paula grew up in Guayaquil where she obtained an undergraduate degree in geology from the Polytechnic University of Guayaquil. She enjoyed many field trips all around Ecuador and during her vacations traveled in Central and South America in the hope of learning more about her people and culture. The last year of her studies she worked at a mine looking for a more ecologically responsible way of recovering gold. Interested more in volcanoes than in raw materials, she came to Galápagos, a mecca for geologists, in 1992. She was bewitched by the other wonders of the islands and became a naturalist guide for the Galápagos National Park.

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  • Salvador Cazar

    Naturalist
    Salvador Cazar studied biology at the Universidad Nacional Del Sur, Bahía Blanca, in Argentina and at the Catholic University of Ecuador. Between 1988 and 1994, Salvador worked as a naturalist and tour leader for several national and international tour operators, leading groups of visitors across the Ecuadorian rain forest, Andean forest, and to Galápagos.

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  • Steve Ewing

    Video Chronicler
    Born and raised in the Pacific Northwest, Steve fell in love with the beauty of the natural world at an early age. In addition to nature, his other main passion was telling stories though the medium of television and radio. Steve studied broadcast journalism at the University of Oregon. There, he learned how to shoot, edit, and report compelling stories using digital video.

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