Ocean Exploration Trust

Scientists Studying Biodiversity and Pharmaceutical Potential on Seafloor off California

Viewers can tune in live to watch trio of Scripps Oceanography researchers and their students explore the deep ocean

Three scientists at Scripps Institution of Oceanography at UC San Diego will lead a cruise off Southern California beginning Oct. 27 to explore the biodiversity of deep sea habitats that are rich in minerals like phosphorus and manganese. Their goal is to document the life forms inhabiting these unique environments and assess their potential to yield chemical substances with pharmaceutical potential.

The public will be able to see what the scientists see in real time when the researchers guide a remotely operated vehicle as it explores the ocean floor, collecting specimens of marine life and samples of mineral-rich rock and sediment.

Scripps scientists will control ROV Hercules aboard E/V Nautilus. Photo: Ocean Exploration Trust
Scripps scientists will guide ROV Hercules from E/V Nautilus. Photo: Ocean Exploration Trust

“Surprisingly, there are still areas off Southern California where marine life remains unexplored,” said lead scientist and Scripps biological oceanographer Lisa Levin. “We think it is important to understand the biodiversity of seafloor life associated with these different minerals that are increasingly targeted for mining by society, prior to decisions about exploitation.”

“This includes the microbes that inhabit these sites,” which represent an important component of the ecosystem and a potential source of new pharmaceuticals, added Jensen.


Scripps’ Levin, marine biologists Paul Jensen and Greg Rouse, and U.S. Geological Survey colleague Kira Mizell will lead the cruise aboard the Ocean Exploration Trust’s Exploration Vessel Nautilus. They hope to survey and sample at nine locations on the continental slope, which has been shaped into an assemblage of canyons, ridges, seamounts, and islands by numerous fault lines that branch off the San Andreas Fault. The farthest location, San Juan Seamount, is roughly 190 miles off the coast.

The researchers hope to identify biological resources that have potential societal benefit, information they hope will inform future decisions about seabed mineral extraction throughout the world. Levin, who is concerned with any potential impacts from climate change, fishing and mining to the seafloor, said an important goal is to take a snapshot of those communities as they exist now to create a baseline view of how they currently function. Samples will be archived into the Scripps Oceanographic Collections, for which there is an online catalogue, and they will be available for future study by other scientists.

Research into marine medical drugs led by Jensen and colleagues includes a compound produced by marine bacteria that is in the final phase of clinical trials to treat patients with the brain cancer glioblastoma.

To explore the area, known as the Borderlands, the researchers will employ the remotely operated vehicle Hercules, sending it on dives to depths between 400 and 2,000 meters (1,300 and 6,500 feet). The public will be able to watch these explorations through the Ocean Exploration Trust’s 24/7 live-streaming Nautilus Live website, with most ROV dives conducted during daytime hours generally beginning at 8 a.m. PT. Because of COVID-19-related restrictions, staffing will be minimal and there will thus not be a way for the public to interact with the science team onboard E/V Nautilus. The general public is encouraged to follow expedition updates on NautilusLive.org and social media via Facebook, Twitter, Youtube, and Instagram

Expedition sponsor NOAA Office of Ocean Exploration and Research will also host website content dedicated to the expedition which runs through Nov. 6.


About Scripps Oceanography

Scripps Institution of Oceanography at the University of California San Diego is one of the world’s most important centers for global earth science research and education. In its second century of discovery, Scripps scientists work to understand and protect the planet, and investigate our oceans, Earth, and atmosphere to find solutions to our greatest environmental challenges. Scripps offers unparalleled education and training for the next generation of scientific and environmental leaders through its undergraduate, master’s and doctoral programs. The institution also operates a fleet of four oceanographic research vessels, and is home to Birch Aquarium at Scripps, the public exploration center that welcomes 500,000 visitors each year.

About UC San Diego

At the University of California San Diego, we embrace a culture of exploration and experimentation. Established in 1960, UC San Diego has been shaped by exceptional scholars who aren’t afraid to look deeper, challenge expectations and redefine conventional wisdom. As one of the top 15 research universities in the world, we are driving innovation and change to advance society, propel economic growth and make our world a better place. Learn more at ucsd.edu.

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