Meet the Board
Hendrik Nollens, President
Hendrik Nollens is currently the Vice President of Animal Health for the SeaWorld and Busch Gardens parks, after serving as a senior staff veterinarian at SeaWorld San Diego.
Dr. Nollens received his veterinary degree from the University of Gent in Belgium, a master’s degree in marine biology from the University of Otago, New Zealand, and a PhD in infectious diseases of marine mammals from the University of Florida. He is a former Clinical Assistant Professor in marine mammal medicine at the University of Florida. He has authored over 40 peer-reviewed papers on various topics of marine animal health and disease. He is a member of the Society for Marine Mammalogy, the International Association for Aquatic Animal Medicine, the American Veterinary Medical Association, the Wildlife Disease Association and he is the vice chair of the Working Group for Marine Mammal Unusual Mortality Events.
Rob Yordi, Executive Director
Rob Yordi has been the Zoological Director for SeaWorld Global Theme Park Development since 2016. He has over 30 years experience in the zoological field and has helped to administer the SeaWorld & Busch Gardens Conservation Fund grants for the past decade.
Rob started his career at Marineland of the Pacific in California as an animal care staff member, working with a variety of marine animals including killer whales, walruses, penguins, dolphins, and sharks. He then became a part of the zoological team that opened SeaWorld San Antonio, where he worked for 16 years in the Aviculture Department. Rob spent the next 4 years at Busch Gardens Williamsburg as Zoological Manager overseeing grey wolves, ambassador animals, and Clydesdale horses. Rob then oversaw the zoological plans for SeaWorld’s Dubai expansion concept. When that projected ended in 2010, Rob became the Curator of Zoological Operations at Busch Gardens Tampa in which he was responsible for the tigers, orangutans, rhinos, and elephants.
Rob’s work for the Fund has allowed him the opportunity to visit projects in Panama, Uganda, Cambodia, South Africa, Brazil, and the U.S. so far. Rob’s professional association memberships include the Association of Zoos and Aquariums, International Marine Mammal Trainers Association, Animal Behavior Management Alliance, American Association of Zookeepers, and he is the Vice-Chair for the Southen Tamandua SSP. Rob also serves as a long standing Board Member for Service Dogs, Inc in Texas.
Elizabeth Gulacsy, Treasurer
Elizabeth Gulacsy is the Treasurer for the SeaWorld & Busch Gardens Conservation Fund. Elizabeth was appointed Chief Accounting Officer for SeaWorld Entertainment, Inc., in August 2017. Prior to that role, she served as Corporate Vice President of Financial Reporting and Director of Financial Reporting for the company. Prior to working for SeaWorld, Elizabeth was Chief Accounting Officer and Corporate Controller for Cross Country Healthcare, Inc. and an Audit Manager for Ernst & Young LLP.
Ms. Gulacsy holds a Bachelor's degree and Master's degree in Accounting from the University of Florida and is a certified public accountant. Elizabeth resides in Orlando, Florida with her husband and two children.
Julie Scardina, Secretary
Julie is a speaker, teacher, and mentor working to improve the lives of animals worldwide. She recently retired from her position as Corporate Director of Animal Ambassador Programs and Animal Training at SeaWorld Parks and Entertainment, a career spanning nearly 40 years. Julie's passion for wildlife and wild places is rivaled only by her commitment to encouraging others to make a difference for the world we share.
Julie co-authored the beautiful and inspiring book, Wildlife Heroes, highlighting 40 people around the globe who have dedicated their lives to saving species.
Julie is one of the most frequent guests on The Tonight Show and has appeared on NBC's Today Show more than 100 times discussing animals and conservation. Julie also travelled the globe for years with Jack Hanna, appearing in his weekly show Animal Adventures.
She is active on the boards of the National Marine Mammal Foundation and the Emerging Wildlife Conservation Leaders program, and is a recipient of the coveted Lifetime Achievement Award from the International Marine Animal Trainers Association. Julie also organizes an annual fundraiser at her home in San Diego that has raised over $100,000 for imperiled wildlife to date. Julie holds a BA degree in Psychology with a minor in Biology from San Diego State University.
Martin Hammar, Assistant Treasurer
Martin Hammer is the Assistant Treasurer for the SeaWorld & Busch Gardens Conservation Fund. Martin has been in several roles within the accounting department of SeaWorld Parks and Entertainment since 2010. He currently serves as Corporate Manager of Property Accounting for the company. Martin has coordinated the SeaWorld & Busch Gardens Conservation Fund's accounting since 2013.
Born and raised in Sweden, Martin was recruited to play soccer at Webber International University where he received a Bachelor of Science in Business Administration. Martin and his wife Christy have two girls, Hanna and Holly.
Andrew Ngo, Member
Andrew Ngo was appointed to Vice President of In-Park Revenue of the company in October 2017. In this role, Mr. Ngo is responsible for Culinary and Merchandise operations across the enterprise and facilitates the growth of in-park revenue for Park Operations and Zoological Operations. Prior to this, he served as the company’s Corporate Vice President of Culinary Operations.
Mr. Ngo has been with SEA for more than 30 years, starting his full-time career in 1983 as a culinary manager at Busch Gardens Williamsburg. He has held other management positions before progressing to his current role, including leading culinary operations in the company’s core theme park business as well as two out-of-park restaurant projects.
Mr. Ngo holds a Bachelor of Science in Biology from Randolph Macon College and a Master of Science in Biology from Old Dominion University.
Dr. Judy St. Leger, Member
Dr. Judy St. Leger is the Corporate Vice-President of Research and Science for SeaWorld Parks and Entertainment. In this position, she works with universities, research institutes and state and federal agencies and biologists to investigate wildlife mortality and potential environmental concerns impacting wildlife. She is also responsible for looking after the research efforts related to the animal collections and education programs for SeaWorld Parks and Entertainment. Dr. St. Leger's research and conservation efforts have taken her across the globe. She has investigated the natural history of toucans in Peru, the diving physiology of penguins in Antarctica, baleen whale mortalities in Australia and Mexico, and assisted in rehabilitation efforts of pangolins in Vietnam.
Dr. St. Leger is a strong proponent of science, technology, engineering and mathematics (STEM) education. She frequently lectures at programs designed to inspire interest in medicine and ocean conservation science. She is a graduate of SUNY Cobleskill as well as Cornell University. She did her advanced veterinary training in pathology in the UC Davis Diagnostic Lab system. She is a member and past president of the International Association of Aquatic Animal Medicine, a member of the Wildlife Disease Association, and has been on the scientific advisory boards for the Oiled Wildlife Care Network and the wildlife health board of the Morris Animal Foundation. She continues a commitment to wildlife pathology on the board of the CL Davis and Sam Thompson Foundation and trains students regularly in veterinary pathology.
Carl Lum, Member
Carl Lum is Park President of SeaWorld and Aquatica located in San Antonio, Texas. He began his career with SeaWorld Parks & Entertainment in 1999 as the finance director for Busch Gardens in Tampa, FL. He was promoted to vice president of finance in 2001 where he led the department’s day-to-day activities while also working closely to integrate the park’s financial and operational strategies with the goals of the company.
In October 2010, Lum was promoted to Park President for Busch Gardens and Water Country USA located in Williamsburg, Virginia, where he oversaw the daily operation of the two Williamsburg-area theme parks. Lum effectively positioned the Williamsburg parks for growth through product enhancements, event expansion and superior guest service. Lum worked extensively with Williamsburg destination leaders to lead a rebranding strategy and to bring new energy and investment to the destination.
In 2016, he was promoted to Park President for the company’s two San Antonio based theme parks, SeaWorld and Aquatica. In this current role, Lum serves on the boards for Visit San Antonio, San Antonio Tourism Council, San Antonio Chamber of Commerce and the Texas Travel Industry Association.
Lum holds a bachelor’s degree and an MBA from Tampa’s University of South Florida. He and his wife Debbie have two sons, Alexander and Ashton.
Bill Street, Member
Bill Street is the Senior Vice President of Conservation, Life Sciences and Education for the Indianapolis Zoo. Previously he held several positions within SeaWorld Parks and Entertainment, including Corporate Curator of Conservation and Education, Executive Director of the SeaWorld & Busch Gardens Conservation Fund, and Director of Education at Busch Gardens in Tampa. He has also held leadership positions at the National Wildlife Federation in Washington D.C., the Long Beach Aquarium of the Pacific in California and the John G. Shedd Aquarium in Chicago, IL
Bill has appeared on several national television programs, including the Today Show, the Weather Channel, and was the host of Adventure Camp, an Emmy nominated children's television show broadcast on the Discovery Channel and CBBC.
Bill has been a leader in environmental education for over 25 years. He has served as Committee Co-Chair within The Association of Zoos and Aquariums, and the Board of Directors of the International Zoo Educators Association and is currently on the Board of the North American Association of Environmental Education.
Sheila Voss, Member
Sheila Voss serves as the Vice President of Education at the Missouri Botanical Garden, helping guide and strengthen the Garden’s efforts to engage, educate, and inspire current and future generations of citizens. She leads a team of diverse professionals based at Missouri Botanical Garden, Shaw Nature Reserve, Sophia M. Sachs Butterfly House, and Litzsinger Road Ecology Center.
Sheila has over 20 years of experience working in informal science learning environments, including zoos, aquaria, nature centers, and botanic gardens. Prior to joining the Garden, Sheila served as Corporate Director of Education and Conservation for the SeaWorld, Busch Gardens, and Discovery Cove parks and served as the Executive Director of the SeaWorld & Busch Gardens Conservation Fund.
Today, Sheila also serves on the boards of Forest ReLeaf of Missouri, a regional non-profit focused on restoring and protecting urban trees and forests, and LUME Institute, a St. Louis based organization working to achieve a vision in which all children are emotionally, socially, and academically ready to succeed. Sheila holds an M.S. in Environmental Sciences/Public Administration and Policy from Southern Illinois University Edwardsville and a B.A. in English/ Communications from Pennsylvania State University.
Glenn Young, Member
Glenn Young has over a four decade history of working with animals, wildlife and conservation. For over thirty years, Glenn held leadership roles in the zoological departments at SeaWorld and Busch Gardens. Glenn has participated in research programs involving several marine mammal species, including dolphins, manatees and killer whales, including photographic surveys of killer whales in Prince William Sound, Alaska.
Glenn has been active in several zoo and wildlife associations and has held Board of Director positions for the International Elephant Foundation and the Brevard Zoo. He has been on the Board of the SeaWorld & Busch Gardens Conservation Fund since its inception.
Glenn earned a B.S. in Zoology from the University of Central Florida and has published several research papers and presented on a variety of marine mammal related topics.