Its services and products are marketed worldwide to oil and gas companies, government agencies, and firms in the aerospace, marine engineering and mobile robotics and construction industries.

In the early 1970s, Oceaneering supported considerable research into ways to increase safety of their divers and general diving efficiency, including their collaboration with Duke University Medical Center to explore the use of trimix breathing gas to reduce the incidence of high-pressure nervous syndrome.

[8] After the 1986 Space Shuttle Challenger disaster, Oceaneering teams recovered the Solid Rocket Booster that contained the faulty O-ring responsible for launch's failure.

Oceaneering ROVs were used to determine what happened to the cargo ship Lucona in the 1991 murder and fraud investigation that claimed uranium mining equipment was lost when the vessel went down.

[9] In the days following the loss of TWA Flight 800 later that same year, Oceaneering was contacted to provide ROV support to the US Navy lead search and recovery effort.

[16] Dry Deck Shelters are used to transport equipment such as the Advanced SEAL Delivery System and Combat Rubber Raiding Craft aboard a submarine.

[17][18] In 2009, Oceaneering installed a demonstrator crane aboard the SS Flickertail State to evaluate its performance in transferring containers between two moving ships, in an operational environment using commercial and oil industry at-sea mooring techniques in the Gulf of Mexico.

"[25] Oceaneering ROV Technician Tyrone Benton was later called as a witness to provide information on the leaks associated with BOP stack investigation, but gave no reason why he later failed to appear in court.

[29][30] BAE Systems was contracted in October 2013 to build a Jones Act-compliant multi-service vessel to serve Oceaneering's "subsea intervention services in the ultra-deep waters of the Gulf of Mexico",[31] which was delivered in 2019.

[40][41] It has provided custom show-action equipment for various entertainment projects, including Revenge of the Mummy at Universal Studios Orlando, and Curse of DarKastle at Busch Gardens Williamsburg.

[45] In November 2009, Oceaneering donated an ROV to Stavanger Offshore Tekniske Skole, a Norwegian technical college, to facilitate their students' qualification exams.