Tracking Seals to Unlock Antarctic Ocean Secrets
Scientists from Seoul National University are using tiny tags on Weddell seals to learn how a warming ocean is changing life beneath Antarctica’s ice.
Tagging Process
Researchers first capture seals on sea‑ice near Thwaites Glacier by carefully approaching from behind and gently darting a sedative into the animal’s flank.
Once calm, they attach a small device to the seal’s head that records depth, speed and water temperature as it swims.Data Transmission
When the seal surfaces, the tag sends the data to satellites for scientists to analyze.
Research Goals
The study aims to see how rising water temperatures affect seal diving and hunting patterns.Glacier‑Water Interaction
Warmer waters melt the glacier from below, stirring up iron and nutrients that feed fish.
These fish become food for the seals, linking ocean chemistry to seal behavior.Broader Implications
Similar shifts may be happening around melting icebergs.
Although Weddell seals are not endangered, understanding their response to rapid environmental change is crucial.Future Outlook
The research could reveal how future warming will impact the entire Antarctic food web.
