In recent months the Enigma “crowdsourced” sightings database has amassed over 9,000 reports of unexplained objects within 10 miles of U.S. shorelines or waterway. These are logged as Unidentified Submersible Objects (USOs) – defined simply as “any object or phenomenon detected underwater that cannot be immediately identified or explained” – and they include everything from dark shapes crossing the surface to bright lights in the waves. By cataloguing pilot and boater reports, videos, and other sightings, Enigma’s database reveals certain patterns and challenges. We now summarize the concrete observations and the limitations of the data.
Reported Phenomena: Hovering Shapes, Plunges, and Low-Altitude Lights
Eyewitness accounts span a range of behaviors. Many reports describe slowly hovering or floating lights and shapes near the water. For example, witnesses often report glowing spherical or disk‐shaped objects stationary above the surface or just below it (Enigma notes ~23% of descriptions mention round or spherical shapes). Some videos show bright or greenish lights moving below the surface. Other reports describe objects at very low altitude: lights or small craft seen skimming the water just above the waves. In about 150 cases the object was seen either hovering above the water or entering/leaving the water. In Enigma’s analysis roughly 104 reports explicitly describe an object rising out of or submerging into the water. These include accounts of things like a pair of lights that drifted above a boat and then descended, or of three glowing spheres ascending from the sea in formation.
No clear signature distinguishes these phenomena from other near-surface sightings, but several recurring details appear in the reports. Many witnesses (including pilots and mariners) remark on fast, erratic motion – about 28% of accounts note unusually high speed or sudden changes in direction. Others focus on surface effects: for instance, some videos show objects penetrating the water without a splash or wake. Because the app collects raw reports, the narratives often include vivid details (green lights darting under a boat, metalic orbs hovering for minutes). We stress these are reports, not proven facts; they tell us what people claim to have seen, with all the usual ambiguities of eyewitness observation.
Geographic Distribution and Hotspots
The coastal sightings are not uniformly distributed. According to Enigma’s public statistics, California and Florida lead by a wide margin: as of August 2025, California accounted for 389 USO reports and Florida 306. Both states have extensive coastlines and large coastal populations, which likely increases reporting density. A broader regional breakdown (for sightings within 1 mile of water) shows the East Coast (including the Southeast) having roughly twice as many sightings as the West Coast. The Gulf of Mexico and even the Great Lakes have occasional reports, but far fewer.
Within those states, Enigma’s maps and data hint at clustered “hotspots” near certain naval bases, shipping lanes, or tourist beaches. For example, observers have noted dense dot-clouds of sightings off Southern California and along Florida’s Atlantic coast. (Marine Technology News calls attention to “several clusters of activity centered around specific coastal points”.) It is not yet known whether these clusters indicate true concentrations of anomalous objects or simply reflect where observers are most numerous. In any case, the statistics clearly show that coastal anomaly reports are concentrated in states with long shorelines and heavy boat/air traffic.
Sensor Data: Reports, Sonar, Video, Metadata
Crucially, nearly all of these 9,000 reports come from civilian observers using the Enigma app. Typical data per report may include a written description, sometimes a timestamp and location, and occasionally a photo or video from a smartphone. In a few cases, users have submitted short videos of lights or objects moving near the water. Because the app is open to anyone, the quality of data varies widely: many entries are just text notes (“bright object zigzagging above water”), while others attach smartphone imagery.
- Eyewitness/Smartphone Video: These are the most common “sensors” behind the reports. A phone video can capture a light or shape, but usually with no precise range or altitude information. Camera metadata may record time and GPS location of the phone, but distance to the object (and its depth if underwater) is generally not measured. Smartphones under open sky have roughly 5 meter horizontal GPS accuracy, but that only pins the observer’s position, not the object’s. A blinking light 1 km offshore might appear similar in the footage to one 100 m away, so mis-estimation is possible. In short, smartphone reports and videos provide clues (color, motion, duration) but not calibrated data.
- Acoustic/Sonar Data: A few reports claim military or civilian sonar contacts, but such submissions are rare and anecdotal. In naval environments, submarines and ships do occasionally log strange “fast contacts” on sonar. However, former submariners warn that these echoes are typically very brief and ambiguous. One retired sonar instructor notes that unusual “fast mover” blips do appear, but there is usually “no way to measure the speed accurately because there isn’t enough data”. By policy these are often logged as unknown contacts or dismissed as biological/ambient noise rather than labeled “USO.” In short, while sonar can sometimes detect high-speed underwater objects, the raw data rarely allow definitive identification.
- Metadata: Some reports include metadata (GPS coordinates, compass heading, device camera settings) if the app captures it. But metadata from casual smartphone footage should be treated cautiously. As noted, typical phone GPS precision is on the order of meters under ideal conditions. Altitude readings (from barometers or GPS) can be even less reliable, especially near sea level. Without synchronized multisensor data (radar + sonar + video), each report stands alone. Enigma’s public feed does not appear to have cross-checked these events with independent instruments, so users supply whatever data they have.
In summary, the data quality is variable. We see: many visual reports of lights/shapes (often at night or twilight), occasionally a photo or video; perhaps some acoustic blips reported in writing; and timestamps/locations from devices. What we do not generally have is multi-instrument verification. Almost none of the 9,000 reports comes with confirmatory radar tracks or published sensor logs. This means the entire dataset must be treated as user-generated claims subject to normal uncertainties of eyewitness science.
Challenges in Verification: Sonar, Positioning and Artifacts
Verifying any USO sighting is inherently difficult in the marine environment. Two major technical issues stand out:
- Sonar Limitations: Active sonar (pings) or passive sonar (listening devices) can in principle detect underwater objects, but both have quirks. The ocean is acoustically complex: sound reflects off the seafloor, temperature layers, and schools of fish, often creating confusing echoes. According to naval sources, unidentified sonar contacts do occur, but they are usually fleeting. As one retired sonar operator put it, strange contacts “last a few seconds” and move so fast that “you can’t measure the speed”, so “there isn’t enough data… I agree it’s odd”. In other words, a sonar trace of a USO might resemble noise. Moreover, the U.S. Navy does not have a formal “USO” category; ambiguous contacts are logged as biological or seismo-acoustic signals. Without publicly released sonar logs, any civilian report of an acoustic USO has no easy way to be checked or reproduced. The War Zone article on this topic concludes that although sonars detect unexplained “fast contacts,” the data are rare and often inconclusive.
- Positioning and Perspective: Even with a video or radar blip, determining an object’s true location and trajectory is hard. Consider a film of a light over water: without reference points, one cannot easily measure its height or speed. A slow horizontal drift of a distant buoy at night might look like a hovering craft if scaled incorrectly. If someone reports an object “30 feet long” or moving “at 500 mph,” these are estimates based on perception, not measured values. In USO reports, observers rarely have time to calibrate rangefinders or note bearing changes, so reported speeds and altitudes are uncertain. Moreover, GNSS tags in images apply to the camera, not the object. Thus the geographic data (latitude/longitude) typically give only the witness’s position, not the moving object’s path. This makes it difficult to correlate a single sighting with, say, a radar track or vessel record.
- Sensor Artifacts: Various mundane effects can mimic anomalies. Acoustically, phenomena like thermal layers (thermoclines) can bend sonar pulses, creating “ghost” targets. Underwater debris or marine life (whales, jellyfish blooms) can register as moving blips. Optically, camera sensors and the ocean surface can play tricks: reflections of city lights or shipspotlights, lens flares on wet surfaces, and the shimmer of bioluminescent plankton could be mistaken for UFO lights. Enigma’s raw dataset does not systematically filter these out, so such artifacts inevitably lurk in the collection. Until any given report is cross-validated (for example, by radar in the air or an independent camera angle), these environmental and sensor ambiguities remain.
Taken together, these challenges mean that verification of any individual USO report is very difficult. The Enigma data can highlight interesting patterns (like clusters of sightings, or repeated descriptions of green lights), but they do not provide the standard scientific cross-checks. In practice, confirming a reported coastal anomaly would require going back to the exact time and place and seeing if any independent instruments (military radar, maritime cameras, weather buoys, etc.) recorded something corresponding. In most cases, no such records are available to the public. As one analysis bluntly puts it: unusual sonar contacts do turn up, but navies have “no way to really classify them as strange,” so such contacts are ordinarily just logged as other phenomena.
Conclusions: What Do the Reports Tell Us – and What Don’t They?
Enigma’s 9,000+ coastal sightings make one fact clear: many people around U.S. waterways have reported something unexplained. The database shows that coastal USO reports are real and non-trivial in number (thousands of entries) and tend to appear in populous coastal regions. Commonalities emerge (e.g. California and Florida as hotspots, and recurring descriptions of lights or trans-medium motion), suggesting these reports are not purely random.
Yet despite the volume of reports, the nature of the objects remains unknown. The current evidence is almost entirely anecdotal – vivid but unverified. We cannot say whether these USOs represent new technology, rare natural phenomena, or sensor errors, because the data lack the definitive corroboration needed for firm conclusions. For example, glowing lights under water could be unknown submarines or simply underwater vehicle lights or even bioluminescent organisms, but without clear identification we cannot tell. High-speed trajectories reported by pilots might later be traced to swarming drones or flares, but again we simply lack follow-up instrumentation.
In other words, the Enigma reports illustrate anomalies in the ocean environment, but they do not in themselves explain them. They tell us that our sensors (human eyes, phones, occasional sonar) are picking up many unidentified signals near the water. However, those sensors (and the people operating them) have known limitations and potential for error. As Rear Admiral Gallaudet and others have cautioned, we must avoid jumping from “unidentified” to extraordinary theories without solid evidence. For now, Enigma’s data set is a pointer: it highlights that unexpected things are being seen at the water’s edge, and that further study (with rigorous instruments and data fusion) would be needed.
In sum, the 9,000 coastal USO reports reveal patterns of behavior (hovering lights, plunging objects, low-altitude movements) and geography (coastal population centers, clusters). They show where and when people are seeing anomalies. But what they don’t tell us is the physical identity of those anomalies. Without corroborating sensor data (radar, calibrated optics, analyzed sonar tracks, etc.), the reports remain unexplained observations – intriguing phenomena at the interface of sea and sky, but not yet definitive evidence of any particular phenomenon. Scientifically, that means these sightings are invitations for further investigation rather than answers in themselves.
Sources: Public analyses and reporting on Enigma’s USO database, including Enigma’s own published statistics, and articles in Marine Technology News. Naval and sonar expert commentary provides context on sensor limits. GPS accuracy is noted from standard technical sources. All cited data are drawn from these public sources.