Current expedition

Deep-Sea Habitats in the Mariana Islands I

June 28 – July 21, 2026
Current Status
Exploring Now
Update
ROV Little Hercules and Atalanta are exploring seafloor east of the Mariana Islands around 5,600 meters deep. AUV Sentry is also exploring at this time. Send in your questions for the team! 
5 hours ago
Ship Location
East of the Mariana Trench, Commonwealth of the Northern Mariana Islands
Our team is in the control room and ready for your questions!

Current Watch

Watch Leader

Scientist

Data Logger

Hercules Pilot

Hercules Pilot

Atalanta Pilot

Video Engineer

Communications

Recent Posts

marine debris 5,800 meters in deep sea
Credit
Ocean Exploration Trust

While diving with ROV Little Hercules over 5,800 meters deep on the abyssal plains of the Western Pacific, we found this piece of marine debris that most certainly came from humans. It's a solemn reminder that our impacts on the global ocean are far-reaching.

Seamounts east of the Mariana Trench
Credit
Ocean Exploration Trust

E/V Nautilus will spend the rest of July and half of August exploring the deep sea of the Mariana Islands. In addition to the scarcity of abyssal surveys east of the Mariana Trench, only a few ancient seamounts here have been surveyed with deep-submergence vehicles. This summer, our ROV dive surveys will collect continuous visual and environmental data, as well as physical samples, to support studies of the region's biodiversity and geological context.