Updates - OOI Expedition

Why the Pioneer Moorings Are Turned Every Six Months

Ever wonder why the Pioneer Array moorings are replaced—or “turned”—every six months? One of the main reasons is biofouling. Over time, marine organisms such as…

Shallow Water Mooring: Capturing Data Near the Surface

The Shallow Water Mooring was specifically designed for the Pioneer Mid-Atlantic Bight Array, enabling detailed sampling of the water column to within just a few…

Exploring the Coastal Profiler Moorings

As part of the Pioneer Fall Turn cruise, the team will deploy two Coastal Profiler Moorings in waters about 100 meters deep. These moorings are…

Boosting Flexibility at Sea: Preparing for the Pioneer Fall Turn Cruise

The team has officially completed loading the R/V Neil Armstrong for Leg #1 of the Pioneer Fall Turn cruise — and this year’s setup brings…

Successful Completion of Fall 2025 Endurance Array Recovery Expedition

The Fall 2025 Coastal Endurance Array Recovery Cruise (SR2520) concluded today with the successful recovery of the PacWave West anchor and final offloading in Newport….

Endurance 23 Recovery Cruise Returns to Newport with All Goals Met

The OOI Endurance Array Team has much to be proud of during this cruise. Skilled, dedicated, creative, and hardworking, the team has successfully met, and…

A Close Look at Life from the Sea

During recovery operations, moorings often bring unexpected visitors from the deep. Here, a team member pauses on deck with a sea anemone – a small…

Sunset at Sea

Among the many rewards of time at sea are the views. This cruise offered several stunning sunsets, each a reminder of the beauty of the…

Sea Lion Visitors

Sea lions are a familiar sight during Endurance Array operations – and frequent visitors to the buoys. These playful but persistent “cute nemeses” find the…

Relaxing on Deck

Exceptional weather has been a highlight of this cruise. After a full day of recovery operations, several members of the Endurance Array team enjoyed a…

Safety Meets Style on Deck

Even while showing off the latest from his 2025 summer collection, deck lead Alex keeps safety first with the essentials: hard hat, boots, and work…

Buoy Climb on Deck

Once a buoy is safely brought on deck, the recovery isn’t quite finished. A member of the team climbs the buoy to pull the winch…

Buoy Approach

A typical recovery of a Coastal Surface Mooring begins by hooking into the buoy and releasing the mooring from its anchor. The mooring is then…

PacWave North and Southwest Anchors Recovered

The Fall 2025 Coastal Endurance Array Recovery Cruise (SR2520) focused on PacWave operations today, completing recoveries of the PacWave North and PacWave Southwest anchors with…

Recovery Operations Wrap Up as Cruise Heads Home

The Fall 2025 Coastal Endurance Array Recovery Cruise (SR2520) successfully completed the recovery of the Washington Offshore Profiling Mooring (CE09OSPM-00022) riser and anchor. In the…

SR2520 Completes EK80 Survey and Inshore Recovery

The Fall 2025 Coastal Endurance Array Recovery Cruise (SR2520) completed a busy day of science and recovery operations, including an EK80 calibration survey, the successful…

Oregon Offshore Mooring Recovered as Cruise Progresses

The Fall 2025 Coastal Endurance Array Recovery Cruise (SR2520) successfully recovered the Oregon Offshore Coastal Surface Mooring (CE04OSSM-00019) and its anchor today. Calm weather supported…

PacWave Anchor & Chain Recovered During ROV Operations

The Fall 2025 Coastal Endurance Array Recovery Cruise (SR2520) entered its second leg today with the addition of a new science party member, loading of…

Recovery Complete at Washington Shelf and Inshore Sites

The Fall 2025 Coastal Endurance Array Recovery Cruise (SR2520) achieved another major milestone with the successful recovery of the Washington Shelf Mooring (CE07SHSM-00020) and the…

Washington Offshore Mooring Successfully Recovered

The Fall 2025 Coastal Endurance Array Recovery Cruise (SR2520) continued with the successful recovery of the Washington Offshore Surface Mooring (CE09OSSM-0020) and its anchor, along…