Galapagos National Park spokeswoman Vanessa Garcia says a powerful wave flipped the small wooden vessel Friday night.
The body of 61-year-old Nils Aarsoe was found Saturday. The Danish Consulate confirmed his death, but could not give details on his hometown.
Garcia says six other tourists and five crew members were rescued and in good condition. The passengers included Aarsoe's wife and daughter, two Irish travelers and two Israelis.
Located in the Pacific some 600 miles (1,000 kilometers) off Ecuador, the Galapagos are home to unique flora and fauna that played a key role in Charles Darwin's theory of evolution.