Donald Karl Ljungblad

Donald Karl Ljungblad, 86, of Elk Mountain, Wyoming, passed away on Friday, June 26, 2026, in Wheat Ridge, Colorado. A distinguished marine mammal specialist and a pioneer in the study of Arctic marine mammals, his life’s work left an indelible mark on the fields of bioacoustics and the conservation of endangered whale species.

Born in Chicago in 1939, Donald dedicated his career to understanding the complex behaviors of marine mammals, including the Blue, Bowhead, and Gray whales. For many years, Ljungblad served as a leading researcher at the Naval Ocean Systems Center (NOSC) in San Diego. He was instrumental in developing innovative techniques for the aerial survey and acoustic monitoring of bowhead whales in the Beaufort, Chukchi, and northern Bering seas. His passion for marine mammals took him around the globe, with research expeditions spanning from the Arctic to the Antarctic, Tasmania, the Middle East, Costa Rica, and Mexico. His work provided critical scientific data that informed environmental policy and helped safeguard marine life in sensitive ecosystems worldwide. His extensive collection of underwater sound recordings remains a vital resource for the scientific community. The recordings are archived at the Macaulay Library at the Cornell Lab of Ornithology.

Though Don lost a leg before the age of 20, he refused to let adversity define him, charting a course for a remarkably vibrant, grit-filled, and adventurous life. A proud U.S. Navy veteran, he became a passionate U.S. certified diver who found peace and profound beauty beneath the waves. Whether navigating the surface or exploring the depths, the ocean was a constant anchor in his life. He crewed in numerous Class A yacht races, navigating legendary courses to Ensenada, La Paz, and Manzanillo, Mexico. Driven by a lifelong passion for the sea, he crewed aboard the Pacifica during the grueling 1971 Transpacific Yacht Race, navigating the 49-foot yawl 2,225 miles from Newport Beach to Honolulu.

Don’s deep connection to the American West was evident in his unique craftsmanship, community spirit, and a profound respect for the land. He meticulously restored historic sheep wagons, was an avid hunter and fisherman, and was a deeply knowledgeable historian with an immense understanding of Native American history and the heritage of Wyoming.

Don held a deep affection and respect for his friends and neighbors in Elk Mountain, Wyoming, and was a proud contributor to the Elk Mountain Museum. More than a brilliant scientist and a sailor, Don was a devoted father, husband, and loyal friend, a man of quiet strength whose legacy of service, enduring curiosity, and untamed adventure will live on in the hearts of all who knew him.

Survivors include his wife, Barbara Pijanowski, and his daughters, Tonja Coates (Steve Coolidge) and Tammy Ljungblad Wainwright (Brian Wainwright). His extended family includes Keegan and Torre Coates; Sacha Coates and Jon Torres, and their daughter Mika; Brett and Vika Wainwright; Rich Pijanowski and Beth Kimzey, along with Nicole (Will) Watts; Mike and Suzy Pijanowski, along with Michael Pijanowski. Mark and Monica Pijanowski, and their son Chris; Mitchell and Kelsey Pijanowski and their son Bodhi. He also leaves his beloved dog, Bridger. 

The family wishes to extend sincere thanks to Dr. Scott Kono and his care team at UCHealth in Denver, as well as the exceptional nursing staff at Collier Hospice Center in Wheat Ridge, for their compassionate care.

A celebration of his life with his family and friends will be held on August 22, 2026 in Elk Mountain, Wyoming.