Traditional ecological knowledge (TEK) offers ecological information and insight relevant to ecological managementand research that cannot be obtained from other sources. Its use is hindered by difficulties of access, in that TEK is typically notavailable to a wide audience. Documentation can overcome this obstacle, allowing TEK to be considered with other forms of easilydisseminated information. This paper describes the author? experience using the semi-directive interview to document TEK aboutbeluga whales in Alaska. This method allows the participants as well as the researcher to guide the interview, so that associationsmade by the participant, and not just those anticipated by the researcher, are discussed. Using maps as the starting point fordiscussions with individuals or groups, the interviews covered expected topics, such as migration and feeding behavior, as wellas unanticipated topics, such as the possible influence of beavers on beluga distribution. The primary research session wasfollowed a year later by a review session to verify the accuracy of the draft report, add missing information, or remove informationthe publication of which might harm community interests. The author found the semi-directive interview to be an effective andpowerful method for accurate and comprehensive documentation of TEK. It worked especially well in group interviews, whichallowed participants to stimulate and validate each other.