On November 1, 2020, 18-year-old Linnea Rose Mills embarked on a scuba diving certification course in the pristine waters of Lake McDonald, nestled within Montana’s Glacier National Park. The day was crisp, with the sun casting a golden hue over the snow-capped peaks as Linnea and her fellow divers prepared for their descent. However, what was intended to be a routine training exercise soon spiraled into a tragic sequence of events.<\/p>\n
The Fateful Dive<\/strong><\/p>\n The group, led by a newly certified instructor, descended into the lake’s depths, aiming to complete both Advanced Open Water and drysuit certifications. Lake McDonald, at an elevation of 3,153 feet, presents unique challenges for divers, especially in the colder months. The water temperature hovered around 39\u00b0F, and the lake’s depth can reach nearly 500 feet, making buoyancy control paramount.<\/p>\n Linnea, a PADI Open Water Diver with limited experience in cold-water diving, was introduced to a drysuit\u2014a specialized piece of equipment designed for such conditions. Unfortunately, the drysuit provided was ill-fitting, and the buoyancy compensator device (BCD) was undersized, unable to support the excessive weight she was carrying. Compounding these issues, the drysuit’s inflation mechanism was incompatible with the regulator, rendering it nonfunctional. Despite these critical equipment failures, Linnea proceeded with the dive.<\/p>\n The Tragic Outcome<\/strong><\/p>\n As the dive progressed, Linnea began to exhibit signs of distress. At approximately 45 feet, she signaled to her instructor, but the response was delayed. At 55 feet, she attempted to attract attention again, but the instructor was preoccupied with another diver. In an effort to assist, a fellow diver, Bob Gentry, approached Linnea. However, due to the suit’s compression and the excessive weight, Linnea became negatively buoyant and was unable to ascend. Despite Gentry’s attempts to provide air and assist her, Linnea slipped into deeper water, eventually reaching a depth of 127 feet. The combination of equipment malfunctions, inadequate training, and environmental factors led to Linnea’s tragic drowning.<\/p>\n Aftermath and Legal Proceedings<\/strong><\/p>\n The incident prompted a thorough investigation by the National Park Service (NPS). The NPS report highlighted several breaches of standard operating procedures, including the use of faulty equipment, lack of proper training, and insufficient supervision. The instructor was found to be negligent in ensuring Linnea’s safety and in adhering to established diving protocols. Despite these findings, criminal charges were not pursued due to insufficient evidence of criminal intent.<\/p>\n In 2021, Linnea’s family filed a civil lawsuit against the dive shop, the instructor, and the Professional Association of Diving Instructors (PADI). The lawsuit alleged negligence and failure to adhere to safety standards. In February 2023, a settlement was reached, though the terms were not publicly disclosed. Following the settlement, the instructor’s membership with PADI was terminated.<\/p>\n Legacy and Call for Reform<\/strong><\/p>\n Linnea’s untimely death has sparked a broader conversation about diving safety standards and the adequacy of training programs. Her family, particularly her brother Nick Mills, has been instrumental in advocating for reforms within the diving community. Nick, now a divemaster, continues to honor Linnea’s memory by promoting safe diving practices and supporting initiatives that aim to prevent similar tragedies.<\/p>\n In 2025, the documentary “How to Kill a Mermaid: The Linnea Mills Story” premiered at the Big Sky Documentary Film Festival. Directed by Damon Ristau, the film delves into the circumstances surrounding Linnea’s death, the subsequent investigation, and the impact on her family and the diving community. The documentary serves as both a tribute to Linnea’s life and a call to action for enhanced safety measures in diving training.<\/p>\n As the diving community reflects on this tragedy, it underscores the imperative for stringent safety protocols, comprehensive training, and unwavering vigilance to ensure that such preventable accidents do not occur in the future.<\/p>\n