A Deep-Sea Expedition Unearths Unimaginable Lifeforms in the South Sandwich Islands

A recent deep-sea expedition to one of the most remote locations on Earth, the South Sandwich Islands in the South Atlantic, has uncovered stunning new ecosystems surrounding hydrothermal vents. The discovery, which includes vibrant coral gardens and new species, was part of a 35-day mission aboard the Schmidt Ocean Institute’sresearch vesselFalkor(too). This expedition is part of the Ocean Census project, a global initiative focused on documenting marine life before it is lost due to climate change, deep-sea mining, and other environmental threats. The scientific team faced severe challenges including subsea earthquakes, hurricane-force winds, towering waves, and icebergs, but their efforts were rewarded with groundbreaking discoveries.

The expedition to the South Sandwich Islands revealed several hydrothermal vent systems previously unknown to science. These vents, which are located on the northeast side of the Quest Caldera, play a crucial role in deep-sea ecosystems. The research team was particularly excited to uncover a vibrant vermillion coral garden thriving near shallow hydrothermal vents around 700 meters deep (nearly 2,300 feet) on Humpback Seamount. While tropical coral reefs are often associated with warm waters, these cold-water coral gardens in the deep sea are a testament to the richness of marine life in unexpected environments.