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Expedition Team Directory
Browse our directory of expedition team members who will join us on upcoming expeditions.
By Expertise
- Expedition Leader
- Naturalist
- Undersea Diving
- National Geographic Photography Expert
By Destination
- Alaska
- Galápagos
Expedition staff are subject to change.
Our Team
Naturalist
Dennis Cornejo
Dennis has spent more than half of his life working with Lindblad Expeditions. He first studied biology in the Sonoran Desert. It was his work with the Arizona-Sonora Desert Museum that brought him into contact with Sven Lindblad. Dennis was working with sea turtles in Mexico, desert tadpoles in southern Arizona and evaluating various legume trees for arid lands agriculture throughout the Sonoran Desert. Sven asked him if he would be interested in working on a ship as a naturalist in Baja California… a simple ‘yes’ turned out to be perhaps the most important decision he ever made! At first, life as a Lindblad naturalist, working during the winter while on break from university, exploring Baja California while guiding and lecturing, was a positive feedback loop for his academic goals. Spending time with guests, who possessed incredible amounts of life experience and enthusiasm, soon eroded Dennis’ dreams of a career in Academia. However, during this time he earned a master’s degree with a thesis on the reproductive strategies of Sonoran Desert toads and a PhD with a dissertation on the mechanical design and biogeography of columnar cacti (large cacti including the saguaro and the cardon). For almost 40 years Dennis has explored and learned with Lindblad. At first in the Sonoran Desert, then the temperate rainforest of Southeast Alaska, the topical rainforests of South America and Oceania and many, many other places: dry to wet, hot to cold. As his world experience increased, so did Dennis’ interests… from reptiles and amphibians, to flowering plants, insects and other invertebrate and lichens. He also worked for 15 years as an Undersea Specialist diving and making videos from Antarctica to Svalbard to Papua New Guinea. Now he is out of the water and on the tundra, so what next? With Lindblad Expeditions there is no limit with the whole world to choose from!
Naturalist/Certified Photo Instructor
David Cothran
David has worked for Lindblad Expeditions-National Geographic since 1993 on six continents and in over 65 countries. David is interested in many of the natural sciences, particularly ornithology, geology and marine biology; he most enjoys contrasting the broad perspectives provided by world travel with detailed investigations of local ecosystems on land and in the sea. David is an avid wildlife and landscape photographer and enjoys shooting with DSLRs, compact cameras and his iPhone. He particularly focuses on photography of wildlife in habitat, macro images of insects and abstracts images of patterns and textures. Before joining Lindblad-National Geographic, David worked as a staff field biologist and education coordinator at the Point Reyes Bird Observatory, an independent research institution in California. At PRBO David studied songbirds, seabirds, owls and elephant seals while overseeing a broad education program, which included classes for school-children, workshops for professional biologists and interpretation for the general public. His home, which is completely off the grid, is at the crest of the Siskiyou Mountains in southern Oregon. He received his Photo Instructor certification in a multi-day training workshop. Developed and taught by National Geographic and Lindblad Expeditions photographers, the workshop helped him develop additional insight and skills necessary to help you better understand your camera and the basics of composition — to better capture the moments at the heart of your expedition.
Naturalist
Bud Lehnhausen
Bud received an undergraduate degree in wildlife biology at Colorado State University. He then immediately went to Alaska where he worked and lived for 30 years. At the University of Alaska, Fairbanks, Bud studied wildlife biology and received a master's degree conducting research on four species of alcid seabird nesting on a remote island in the Gulf of Alaska. For a number of years he worked as a research biologist studying various fields, including moose/habitat relationships, songbird populations in relation to succession, tundra bird populations and migration, and woodpecker populations after natural forest fires. Since 1983, Bud has worked as a naturalist and expedition leader with Lindblad Expeditions-National Geographic. During these years he has traveled in the Arctic and Antarctic, temperate and tropical regions of Central and South America, Atlantic Ocean crossings, and the western South Pacific. These numerous voyages over the years have given him a chance to appreciate diversity of life and cultures which he finds fascinating. In addition to traveling, Bud is an avid natural history photographer and his wife writes children’s books on natural history illustrating them and using Bud’s photographs. Having built their own super-insulated house in Fairbanks over a 20 year period, in 2003 they relocated their family to northern Colorado. They are in the process of being owner/builders of a new energy efficient passive solar home in the foothills above Fort Collins.
Naturalist/Certified Photo Instructor
Michael Nolan
Michael Nolan was born in Bitburg, Germany to an Air Force family stationed there. His first experience of the ocean came at age 12, when he learned to snorkel in the Italian Mediterranean. At age 17 he moved to Tucson, Arizona and became a PADI SCUBA instructor, before starting a SCUBA diving business that specialized in diving trips to the Sea of Cortez. Michael has since begun a new career in marine photography. He worked with National Geographic dolphin researchers in the Bahamas throughout the nineties, as well as running trips to the Silver Banks in the Dominican Republic to study and photograph Atlantic Humpback Whales. Today he is an award-winning photographer who specializes in intimate portraits of marine animals. He has traveled the oceans of the world in search of the world's most magnificent beings. His photography has appeared in hundreds of magazines, calendars, and books in over 45 countries worldwide. He currently "migrates" with the whales, spending his winters in the warmer tropical latitudes where whales mate and give birth and his summers in the cooler higher latitudes where animals migrate to feed.
National Geographic Photography Expert
Dan Westergren
As the longtime photo editor for National Geographic Traveler magazine, Dan Westergren was responsible for the magazine’s photographic vision, which has earned the publication numerous awards for photography. He's been lucky to photograph amazing places for Traveler , such as the summits of Mont Blanc, the Matterhorn, Kilimanjaro, and the North Pole. Dan is especially drawn to Arctic regions, having made more than ten trips above the Arctic Circle. On one of these memorable assignments, Dan flew to Svalbard Island and then jumped on a Russian plane that took him over the pack ice, a landscape that is depicted in his favorite painting that hangs in the boardroom at National Geographic’s headquarters. The painting depicts Admiral Richard E. Byrd’s historic flight to the North Pole. The Russian plane landed near 89 degrees north latitude, and with a small group of intrepid travelers, Dan skied the “Last Degree” to the North Pole. After seven days of skiing in the cold footsteps of Fritjof Nansen and the other famous adventurers who have gone north from Svalbard, Dan finally stood for himself at the North Pole, and felt he had personally reached out and touched the heart of exploration at the Society. Westergren is an experienced teacher, having led workshops and served as photography expert for National Geographic Expeditions around the world—from Yellowstone, Baja, and the Galápagos Islands to Alaska, Antarctica, and the high Arctic.
Naturalist
Octavio Maravilla
Octavio was born in Mexico City and moved to La Paz at age 19, to study Marine Biology at the Baja California Sur State University. He began his field research on California sea lions, working at Los Islotes, a small rookery close to La Paz City. Later, he expanded his research to all the sea lion colonies in the Gulf of California and over the Pacific coast of the Baja California Peninsula — aside sea lions, he studied three other species of Mexican pinnipeds, harbor seals, elephant seals, and Guadalupe fur seals. His graduate work includes censuses of California sea lions in five different colonies on the southern tip of the Baja Peninsula. In 1986 Octavio travelled to Paris, France, where he spent a year obtaining a degree in animal behavior. Returning to La Paz in 1987, he began research with gray whales in Mexico; a directed and coordinated international effort to do censuses with the endangered vaquita porpoise of the Gulf of California. He joined Lindblad Expeditions for a first period in 1994 until the year 2000 in Baja California. Then he engaged in further research to obtain his Ph.D., working in the Bay of La Paz, analyzing and studying the interactions between sea lions and fisheries. He obtained his degree in August 2005. Octavio rejoined Lindblad Expeditions in 2006 season working only in Baja California. He lives in La Paz, Baja California Sur, recently he retired and works teaching French at the French Alliance of La Paz.
Naturalist
Marylou Blakeslee
For the past 20 years, Marylou Blakeslee has traveled the world sharing her love of wild places. She lectures on a number of topics from the bears and wolves of the Arctic, to the leopard seals and whales of the Antarctic, as well as the turtles and fishes of the Great Barrier Reef. Most summers Marylou works as a park ranger at Glacier Bay National Park. Fall finds her guiding trips among the “ice experts,” the polar bears of Churchill, Manitoba. Her naturalist work in Antarctica, in the austral summer, provides ample opportunity to share observations on interactions of ice, climate and marine life. Late winter, Baja beckons with grey whales birthing in warm lagoons and desert wildflowers in bloom. She also leads trips to Yellowstone for a glimpse of the winter world of the wolf. Marylou Blakeslee began her involvement with the natural world through her love of drawing and painting. Her work is included in collections across the country and internationally. Leading hikes, lecturing, kayaking, snorkeling, wildlife spotting and painting are some of her favorite things to do. Come share with her the varied natural treasures and beauty this world has to offer.
Naturalist/Certified Photo Instructor
Jennifer Davidson
Jennifer Davidson has been a lifelong lover of wide open spaces. She grew up in a ranching family in remote West Texas. Her roots run many generations deep in that land, which she has always considered home. She studied marine biology on the shores of the Gulf of Mexico, participating in monitoring projects in the bays of Texas’s Coastal Bend Region and the Flower Gardens National Marine Sanctuary. In 2005, she moved back to the drier climates, this time to the mountains of Northern New Mexico, to pursue a career in photography, which had been a lifelong source of enjoyment. Jennifer has photographed across the globe, focusing her lens on cultures, wildlife, and landscapes to tell the stories of the places she visits. Jennifer has taught photography workshops throughout the United States with National Geographic Expeditions and the Santa Fe Workshops. Her work from South America and the Galapagos Islands has been published in National Geographic Traveller (UK). As a passionate and patient instructor, she enjoys teaching photographers to see the world in new ways through their cameras. Since she began traveling with Lindblad Expeditions in 2007, she has served as a photo instructor in Alaska, the Amazon, Baja California, Cuba, Europe, Galapagos, the Mediterranean, the South Pacific, and Southeast Asia.
Naturalist/Certified Photo Instructor
Steve Morello
Steve Morello has had a long and colorful career in the natural history world. Born in New Jersey he was lucky to be able to summer on the shores of Cape Cod. Whether it was exploring the tidal pools, snorkeling along the beach, or hiking in the dunes, it all came together to instill in him a deep connection to the natural world. It was no surprise that he would return to the Cape as a whale researcher in his adult years. It was on the Cape that Steve first became involved in guiding, and for 15 years acted as naturalist on whale watching boats in the Gulf of Maine. Steve worked with groups creating environmental education material for school programs and soon found another one of his passions, photography. Well known as a professional wildlife photographer and guide, Steve’s work has appeared in countless publications, including National Geographic magazines and books, The New York Times , and photo collections of the World Wildlife Fund. Steve has written numerous magazine articles on the subjects of travel and nature photography. He is the author of The Traveling Nature Photographer , which has been acclaimed as a must-have for anyone who travels and is interested in photography. Although now a photographer more than anything else, he stays active in the research field and is on the Board of Directors of the Alaskan Whale Foundation, where he assists on research of the whales of Southeast Alaska. Steve is also working on a new project off the coast of Peru where sustainable tourism, scientists, and local fishermen will be working together to conserve a newly created marine sanctuary.
National Geographic Photography Expert
Krista Rossow
For more than a decade, Krista Rossow has worked as a photographer, photo editor, and educator for National Geographic. She began her career as a photo editor at National Geographic Traveler magazine, where she shaped compelling stories from world-class imagery. In her freelance career, she has shot feature stories as a contributing photographer for Traveler in Japan, South Africa, Morocco, Costa Rica, New Zealand, and various U.S. cities. She regularly judges Instagram contests for @NatGeoTravel and photo edits for National Geographic Books. Krista travels with National Geographic Expeditions teaching photography around the world–from the Galápagos Islands, Patagonia, and Peru to Alaska, Antarctica, and the Arctic. She sees the camera as a tool for understanding new cultures, meeting the locals, and exploring the natural world. Her images are represented by National Geographic Image Collection.
National Geographic Photography Expert
Todd Gipstein
Todd Gipstein has been a photographer, writer, producer, and lecturer for more than 40 years. He has worked with National Geographic since 1987. For many years, he was the Geographic’s Director of Multi-Image and an Executive Producer of Media. His photographs have been published in National Geographic and Traveler magazines and in many books. His award-winning documentaries for the Geographic have dealt with a diverse range of topics, including photography, nature, the environment, history, exploration, travel, and National Geographic itself. His work is known worldwide for its evocative storytelling. He continues to take photographs for the Nat Geo Creative image library. An enthusiastic traveler and teacher, Todd has lectured, presented his documentaries, and given photography workshops for the Geographic around the world. His photography has been exhibited internationally, and he regularly participates in photography and media festivals in Italy. Born and raised in New London, Connecticut, a graduate of Harvard, Todd has written three novels—Legacy of the Light, Magician’s Choice, and In the Shadow of the Light—all historical fiction. He is currently working on another, Elephant Island. Todd is also a magician and collector of magic memorabilia. In their not so spare time, he and his wife Marcia, a photo editor and yoga teacher, are restoring New London Ledge Lighthouse. It is a mile out to sea off the coast of their home in Groton, Connecticut. You can learn more about Todd at his website www.Gipstein.com and on Facebook/GipsteinBooks.
Expedition Leader
Doug Gould
Travel and adventure were an integral part of Doug’s upbringing in a small town on the south shore of Long Island, New York. Growing up on the Great South Bay, his family claims Doug learned to sail before he learned to walk. Whether it was camping, sailing, birding, traveling across country or spending most of fifth grade living in Europe, Doug’s formative years left him with a love of wildlife, the outdoors, and a desire to keep moving. After receiving a B.A. in dramatic arts from the University of California, Santa Barbara, Doug mixed a short career in the film and TV industry with two summers working for the Catalina Island Harbor Patrol, which led to his owning the third largest private marine rescue company in California. Doug sat on the Board of Directors of the Vessel Assist Association of America for three years and has lectured extensively to the marine assistance industry about safety and risk management. In 2003, he volunteered to work for Oceanites as a member of their Antarctic Site Inventory wildlife census team (aka: a penguin counter). This opportunity included numerous trips to the Antarctic Peninsula over the span of three seasons. The Antarctic Site Inventory focused on gathering data about the impact of tourism on Antarctic wildlife, and helped to develop some of the Antarctic Treaty recommendations that govern tourism today. Since 2011, Doug has worked full time as a naturalist, photographer and expedition leader, working primarily in the polar regions. In 2015 he joined Lindblad Expeditions, and continues to share his enthusiasm for travel and adventure as an expedition leader and certified photo instructor.
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