Researchers recently embarked on a groundbreaking expedition in the Southern Ocean, uncovering 30 new species and highlighting the region’s significant biodiversity. Yet, the Southern Ocean is one of the most unexplored marine environments. As scientists continue to explore its depths, they can’t help but continue to find amazing surprises.
The expedition, which involved sampling various locations, including volcanic calderas and the South Sandwich trench, collected nearly 2,000 specimens across 14 animal groups. What these findings reveal is that a majority of our ocean biodiversity remains unknown to science. To date, scientists have tested samples from less than 30% of the samples they’ve collected.
Among this incredible finds is a carnivorous sponge, dubbed Chondrocladia sp nov that lures its prey using a unique inhalation-based feeding mechanism. This unusual spherical sponge’s surface is lined with microscopic, meat-hook-shaped spines to snag unsuspecting prey—making it a rather unusual sponge. Scientists have found a previously unknown species of sea star. They discovered an iridescent scale worm — both discoveries contributing to the incredible biodiversity of the region.
Dr. Michelle Taylor, a key researcher aboard the expedition and the receiver of chronicling coral species, highlighted that these findings were impactful.
“The Southern Ocean remains profoundly undersampled.” – Dr Michelle Taylor
The team of researchers is constantly assessing candidates for new species. As part of this research, they are examining black corals and the new genus of sea pens. This experience underscored the urgency and importance of continued exploration in these deep-sea habitats.
“To date, we have only assessed under 30% of the samples collected from this expedition, so confirming 30 new species already shows how much biodiversity is still undocumented.” – Dr Michelle Taylor
The expedition’s chief goal was sampling different types of seafloor habitats, including areas surrounding Montagu and Saunders islands. These areas are crucial for understanding marine life in the Southern Ocean and addressing the wider ecological impacts of climate change.
One of the most exciting moments of the expedition was capturing the first confirmed footage of a juvenile colossal squid. This unusual observation further highlights the mystery surrounding the Southern Ocean and its difficult to understand ecosystems.
One of the most exciting moments of the expedition was capturing the first confirmed footage of a juvenile colossal squid. This rare sighting adds to the intrigue surrounding the Southern Ocean and its complex ecosystems.