Unusual, Exotic and Special-Category UAP Craft

Egg-shaped UFOs have been reported since at least 1939, with the most famous incident occurring on April 24, 1964, in Socorro, New Mexico. Police Sergeant Lonnie Zamora witnessed an egg-shaped craft with landing gear, two small beings in white coveralls near the craft, and a red insignia on the craft's side before it lifted off with blue flames. The case was investigated by Project Blue Book's J. Allen Hynek, the Air Force, and FBI. Physical evidence included burnt bushes and landing gear impressions. Approximately 1,300 egg-shaped and 6,500 oval-shaped UFO reports were documented between 2001-2017.

Diamond-shaped UFOs produced one of the most medically significant cases in UFO history: the Cash-Landrum Incident. Betty Cash, Vickie Landrum, and Colby Landrum witnessed a diamond or kite-shaped craft, large as a water tower, dull metallic/aluminum-colored, emitting intense flames from the bottom and producing extreme heat. Approximately 23 helicopters, including CH-47 Chinooks, appeared to be escorting the object. The incident resulted in severe health consequences: Betty Cash developed cancer, required multiple surgeries, and lost her hair; both women were hospitalized with symptoms consistent with radiation exposure.

Rectangular or box-shaped UFOs represent one of the less common configurations. These craft appear as geometric rectangular solids, sometimes compared to shipping containers or buildings. Reports describe varying sizes from small to enormous. The unusual shape challenges conventional understanding of aerodynamics, as rectangular forms are typically not associated with flight. Some researchers have noted an increase in such sightings in recent years.

Cone-shaped or conical UFOs appear as three-dimensional cone shapes, sometimes compared to witches' hats or ice cream cones. The configuration may appear with the point up or down. Some reports describe the craft as rotating or spinning around its vertical axis. This shape is relatively uncommon compared to disc or triangular forms but has been consistently reported over decades.

The Jellyfish UAP represents one of the more recent and unusual categories to gain attention. Named for their resemblance to marine jellyfish, these objects appear to have a dome-like upper portion with trailing tendrils or appendages below. Military footage from a US base in the Middle East captured an object matching this description moving across the installation. The objects demonstrate unusual movement patterns that some observers compare to the pulsing locomotion of actual jellyfish.

The most famous acorn or bell-shaped UFO incident occurred in Kecksburg, Pennsylvania, when a brilliant fireball was seen over six U.S. states and Ontario, Canada. Witnesses reported a controlled landing in the woods, describing a bronze-colored, acorn-shaped object roughly the size of a small car with hieroglyphic-like markings around its base. Military personnel rapidly secured the site and removed an object on a flatbed truck. The incident has been compared to the alleged Nazi 'Die Glocke' (The Bell) project. Despite official explanations of a meteor, witnesses maintain a structured craft was recovered.

Crescent or half-moon shaped craft were among the original objects reported by Kenneth Arnold in his landmark 1947 sighting. Arnold described one of the nine objects as distinctly different from the others, appearing crescent or heel-shaped. This configuration has been reported periodically since, sometimes described as resembling a boomerang but with a more curved, lunar appearance. The shape may represent a variant of the flying wing design.

Dome-shaped craft appear as hemispherical or half-sphere objects, often described as resembling an inverted bowl or dome. The Robert Taylor incident craft was described as a 'flying dome' that was aluminum-colored, whitish against the mesa background. The case became the first (and only) UFO sighting to be subject of a criminal investigation in the UK. A commemorative plaque was installed at the site in 1992. Taylor reported the craft emitted two smaller 'sea mine'-like spheres that attempted to drag him toward it.

The 1561 Nuremberg celestial phenomenon was documented in a famous broadsheet with woodcut illustration by Hans Glaser. The event described an 'aerial battle' at dawn featuring hundreds of spheres, cylinders, crosses, and other shapes emerging 'from the sun.' Cross-shaped craft appear with four arms extending from a central point, sometimes with spheres at the ends of each arm. Carl Jung analyzed the Nuremberg event as having archetypal symbolic meaning. The NUFORC database contains 356 'cross' shape entries.

This category encompasses sightings of multiple lights or objects flying in coordinated formation, maintaining consistent spacing and moving as a single unit. Formations may be linear, V-shaped, triangular grid patterns, or other geometric arrangements. The Phoenix Lights (1997) demonstrated both a V-formation of lights and what appeared to be lights attached to a massive single craft. Some formation sightings may represent single large craft with lights at vertices rather than multiple separate objects.

USO (Unidentified Submerged Object) reports date back to the 11th century when English witnesses reported seeing a fiery object that 'revolved, ascended on high, and then descended into the sea,' repeatedly reappearing off the Northumberland coast. Transmedium craft are defined by their ability to transition seamlessly between air and water without any change in speed, splash, or cavitation effects. The USS Nimitz 'Tic Tac' was observed above a churning disturbance in the ocean. As of August 2025, the Enigma app has logged over 9,000 USO sightings within 10 miles of U.S. coastlines.

Chinese polymath Shen Kuo (1031-1095) recorded eyewitness testimony of a flying object 'shaped like a pearl' with opening doors that would 'shine a blinding light from its interior that would cast shadows from trees for ten miles in radius.' This represents one of the earliest detailed descriptions of a structured craft with internal illumination. The account predates modern UFO phenomenon by nearly a millennium and describes technological characteristics consistent with modern structured craft reports.

Named after contactee George Adamski, this distinctive craft type features a bell-shaped or domed disc with three large spheres on the underside (landing gear) and a prominent dome on top. Adamski photographed what he claimed was a Venusian scout ship. The design has been reported by independent witnesses who had no knowledge of Adamski's claims, featuring portholes around the rim and a glowing appearance.

Six-sided craft that appear as flat hexagonal platforms or three-dimensional hexagonal prisms. These unusual configurations challenge conventional aerodynamics. Some witnesses describe them as rotating slowly while stationary. The hexagonal shape appears less frequently than triangles or discs but has been documented in multiple countries.

Multi-sided craft with eight or more sides, appearing as complex geometric shapes. These may represent advanced versions of triangular craft or entirely different designs. Some witnesses describe the craft as appearing to shift between different polygon configurations, suggesting possible dimensional or optical properties.

Craft appearing as five or six-pointed star shapes, with arms radiating from a central body. These may feature lights at each point of the star. The unusual configuration has been reported rarely but consistently over decades. Some descriptions suggest the 'arms' may be extendable or retractable.

Craft appearing as two discs stacked vertically, sometimes with a visible gap between them. The configuration may rotate with discs spinning in opposite directions. Some witnesses describe energy or light emanating from between the two disc sections. This may represent a propulsion system configuration.

Craft with a dome on top of a cylindrical or disc-shaped lower section, resembling a mushroom profile. During the famous 1954 French UFO wave, multiple witnesses described craft matching this configuration. The design may relate to cockpit or observation dome requirements. Sometimes described with a 'stem' extending downward.

Craft resembling a spinning top or gyroscope, with a wide middle section tapering to points at top and bottom. These craft are often described as spinning rapidly around their vertical axis. The gyroscopic motion may relate to propulsion or stabilization. Some reports describe them landing on the pointed bottom section.

Craft consisting of two cones joined at their points, creating an hourglass profile. These rare configurations may rotate around the central junction point. Some witnesses describe glowing at the narrow central section where the cones meet. The design suggests possible energy focus or generation at the junction.

Distinguished from luminous orbs, these are spherical craft that appear to be contained plasma or energy within a structured field or shell. The surface may show patterns, grids, or containment field effects. These may represent energy-based propulsion or beings of pure energy within technological containment. Related to but distinct from ball lightning.

Craft observed changing shape during observation - from disc to sphere, from triangle to diamond, or through more radical transformations. This phenomenon may represent interdimensional properties, advanced metamaterial technology, or perception manipulation. Some researchers suggest these are single craft observed at different 'phase' states.