Thousands of Mysterious Underwater UFO Sightings Reported Near US Shores
Reports of unexplained underwater activity are gaining renewed attention after a popular UFO-tracking platform revealed thousands of sightings recorded near coastlines and waterways across the United States.
Enigma Labs
Enigma, a non-partisan organization known for maintaining what it calls the “largest queryable historical sighting database for global UFO sightings,” has logged around 30,000 UFO reports since its launch in 2022.
Enigma says thousands of unexplained underwater objects have been reported near US coastlines and waterways.
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Recently, however, attention has increasingly focused on sightings occurring underwater rather than in the sky.
Marine Technology News reported that since August 2025, Enigma has cataloged more than 9,000 sightings of mysterious objects located within 10 miles of US shorelines and other major bodies of water. Roughly 500 of those reports occurred within five miles of the coast.
The objects are classified as Unidentified Submersible Objects, commonly known as USOs. According to Marine Technology News, USOs are “any object detected underwater that cannot be immediately identified or explained.”
Witnesses and sensor systems have reportedly detected these objects exhibiting unusual behavior underwater. Observers often describe them as traveling at extreme speeds, maneuvering sharply, and moving seamlessly between underwater and aerial environments through “transmedium” capabilities.
Kent Heckenlively, author of “Catastrophic Disclosure: Aliens, The Deep State and The Truth,” said some of the reports are difficult to explain.
“What is really interesting to me is the reports that we receive about [United States] underwater vessels detecting craft moving at exceptionally high speeds underwater,” Heckenlively told Fox News Digital.
“Now that’s one of two things: That’s something we don’t understand, or that means our technology is picking up ghosts underwater.”
The reports also include more than 150 objects allegedly observed hovering above water or entering and exiting bodies of water, according to Marine Technology News.
Enigma’s data indicates California recorded the largest number of USO sightings with 389 reports, followed by Florida with 306 accounts. The findings also point to several concentrated hotspots of activity near coastal regions throughout the country.
Officials and experts have expressed concern that the unexplained activity could have implications for national security.
“It seems like there are five or six areas where there’s real high UFO activity around water,” Heckenlively said.
“It would make a great deal of sense, and I think the problem that the regular person is facing is that they’re saying to themselves, ‘Okay, if these things are real, how could they come to earth and hide?’ And the ocean seems like a great place to hide.”
Retired Navy Rear Admiral Tim Gallaudet has previously warned that footage released by the Pentagon may show technology beyond current human capabilities.
“The fact that unidentified objects with unexplainable characteristics are entering US water space and the [Department of War] is not raising a giant red flag is a sign that the government is not sharing all it knows about all-domain anomalous phenomena,” Gallaudet wrote in a report released last year.
The report referenced a 2019 incident in which an unidentified object was captured on video passing by the Navy’s USS Omaha before descending into the Pacific Ocean and disappearing.
“Pilots, credible observers and calibrated military instrumentation have recorded objects accelerating at rates and crossing the air–sea interface in ways not possible for anything made by humans,” Gallaudet wrote.
Marine Technology News also highlighted one witness report involving two mysterious underwater objects that illuminated while beneath the surface.
As public interest in UFOs continues to grow, platforms like Enigma are increasingly relying on crowdsourced information to document sightings and make reports accessible to the public.
“I’m skeptical of alien stuff,” Heckenlively said. “But I’m convinced that the government is lying to us.”
Heckenlively argued that releasing UFO-related information through independent organizations could encourage more openness from government agencies regarding unexplained phenomena and national security matters.
“What’s the best disinfectant for corruption? Sunlight,” Heckenlively told Fox News Digital. “So let’s throw as much sunlight on this as possible, and see what scurries out.”
