Leaders & Assistant Leaders

Please note: Staff and voyages reflect current schedule, substitutions may occur. 

Conrad Combrink, Director Expedition Cruises


As Director of Expedition Planning and Strategic Development, Conrad Combrink takes an active role aboard many Silversea Expeditions and is at the helm of strategic planning for all expedition itineraries, programme development, and expedition staff recruitment. He is gregarious and has an infectious passion for expedition travel, spending many months per year researching new and remote destinations and exciting adventures for Silversea guests.


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Juan Carlos Restrepo, Expedition Leader

Juan Carlos Restrepo’s passion for travel and the great outdoors have taken him to all continents and oceans of the world. He obtained his Masters degree in Geology from the Universidad de Caldas, in Colombia. Juan spends his time between Antarctica and the high Arctic, both as Expedition Leader and Geology Lecturer.


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Daniil Elterman, Assistant Expedition Leader

Daniil Elterman has an unrelenting passion for the sea. He is always eager to discover new places and dash to exciting adventures. Anyone can see by his dedication, that cruising and exploring are his calling. Daniil currently spends more than half the year at sea, where he works as Assistant Expedition Leader.

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Kara Weller, Expedition Leader and Biologist

Kara Weller has always had a passion for travel and for the biology of the natural world. Growing up in Alaska, she first became interested in wildlife when bears and moose constantly visited the woods next to her house. Kara has earned B.S. and M.S. degrees in wildlife biology, with research experiences that range from studying whales in the Bering Sea to mouflon sheep in Eastern Europe.

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Stefan Kredel, Geologist

Never the idle tourist, Stefan Kredel has cycled throughout Europe, traversed Nepal’s Annapurna Circle, hiked the Inca trail to Machu Picchu, and explored copper, gold and diamond mines in Austria, Italy, South Africa, and his native Germany. He has travelled extensively throughout Iceland, Greenland, and the North Pole regions.  

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Mike Messick, Expedition Leader

Mike is considered one of the most experienced Expedition Leaders in the business. He has led expeditions to over 170 countries on all seven continents aboard more than 20 different ships. One month prior to his college graduation from New York’s Skidmore College, Mike was offered a job as Divemaster and Assistant Expedition Leader in Indonesia, and he then embarked on what is now a 30-year career in expedition travel.

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