Any offshore oil rig that extends past 1500 meters is considered to be an ultra-deepwater production facility. However, that's still nowhere close to the deepest man has explored in the ocean.

Mahi-mahi were found near floating debris, while tuna were scarce offshore. Inshore fishing focused on bluefish, fluke, ling, and sea bass, with mackerel also available.

Demand for floating rigs dropped to 107 in 2021 from 257 in 2014 while day rates for the non-harsh ultra-deepwater segment declined to less than $200,000/day from peaks of over $500,000/day.

Offshore oil rigs are some of the largest structures found on the water, but are they just floating out there? How do they stay in place? Here's what we know.