The research vessel RSV Nuyina has completed a significant expedition to Heard Island, returning on January 25, 2026, after extensive scientific work both on land and at sea. The team of scientists engaged in multiple projects, including wildlife monitoring, marine debris collection, and sampling of various species, despite facing challenging weather conditions.
During the expedition, seal biologists conducted a thorough survey from Skua Beach to Fairchild Beach, counting over 1,000 fur seal pups at Fairchild. The ongoing efforts of the HPAI team focused on monitoring wildlife through drone surveillance and on-island sampling, particularly following the confirmed detection of HPAI in southern elephant seals during prior work.
Aerial footage and biological samples collected during this second phase of the expedition, referred to as V2, will undergo analysis to provide conclusive outcomes. The research team prioritized conducting targeted surveys of threatened and endemic species, underscoring the importance of ongoing ecological assessments in the region.
Marine Science Operations Yield New Discoveries
In addition to seal monitoring, the scientists examined marine debris, successfully retrieving a pallet of plastic waste from the island. Sampling of invertebrates continued, with the team documenting several species, including a notable find of a nudibranch previously unrecorded in the Heard Island area. Approximately eight species of sea snails were also collected, contributing to the understanding of marine biodiversity in this remote location.
The expedition utilized a remotely operated underwater vehicle, deploying it at various sites to enhance data collection. The science tender also performed vital operations, including retrieving a tide gauge initially deployed during the first voyage, which yielded additional samples of marine life that had taken residence in the gauge.
Conditions on Heard Island proved particularly difficult over the previous weekend, with high winds impacting operations. Nevertheless, the team persevered, continuing their scientific endeavors until their return to the ship on Sunday evening. A brief weather window on Wednesday allowed for the retrieval of all gear deployed during the voyage, alongside collected debris.
The final night at Heard Island provided a rare opportunity for the expedition members to witness a beautiful sunset under clear skies. Those who remained awake were rewarded with a spectacular view of the aurora over Big Ben, creating a memorable conclusion to their time on the island.
Commitment to Biosecurity and Safe Return
The last day of the expedition was dedicated to the rigorous cleaning of equipment, a crucial step in maintaining biosecurity. As the team prepared for departure, drone and science tender operations continued, ensuring all necessary data was collected before beginning the journey home at 20:00.
The successful completion of this expedition highlights the dedication of marine scientists to understanding the unique ecosystem of Heard Island and the ongoing importance of monitoring wildlife in the face of environmental challenges.
