A marine biologist, Dr. Madsen, is questioning the validity of GPS data used to suggest a whale was recently in the Baltic Sea. He argues the data could originate from a deceased whale, as the signals don’t definitively prove the animal was alive at the time of transmission. Dr. Madsen is calling for the release of the complete dive data collected, including details beyond just location. He further insists that an independent, external review of the data is necessary to draw accurate conclusions. The controversy centers around data presented by Backhaus, whose findings are now under scrutiny. Without full transparency and external validation, the biologist believes claims about the whale’s current status are unsubstantiated. The debate highlights the challenges of tracking marine life and interpreting data from remote sensors.