@ocean.mysteries.h: oceanmysterieshub Rare deep-sea footage captured by an ROV near an offshore oil platform appears to show an absolutely enormous tuna-reportedly estimated at nearly 18 feet long. For comparison, Atlantic bluefin tuna commonly reach around 6-8 feet, while the largest confirmed individuals have measured close to 13 feet. If the estimate from this footage is accurate, this fish would be far beyond what is normally documented. ROVs are often sent down for routine inspections around subsea structures, but these missions sometimes reveal surprisingly rich ecosystems. Offshore platforms can act like artificial reefs, attracting huge schools of fish and the predators that follow them. Whether this tuna was truly as massive as it appeared or perspective made it look larger, the footage is another reminder of how much of the deep ocean remains poorly observed. Follow @oceanmysterieshub for more strange discoveries from beneath the waves. #deepsea #oceanmysteries #tuna #marinelife #underwater#oceanfacts #ocean