The Bloop

During the Cold War, the United States deployed a vast network of undersea listening devices to hunt Soviet nuclear submarines however the collapse of the USSR rendered the system obsolete. Rather than retiring it, the network was kept functional for scientific research. In 1997 the senor network recorded an extremely powerful and low frequency sound now known as “the Bloop”. It lasted about a minute and was “of sufficient amplitude to be heard on multiple sensors, at a range of about 5,000 km.” Though new claims speculate its origin as being that of an icequake, analysis at the time found it to fit the profile of a living creature the size of which would dwarf even the largest living animal on Earth, the Blue Whale, by at least seven times.

While the Bloop is the most notable, it is actually a part of series of similar recordings spanning over a decade and though the majority have been dismissed as ice related phenomenon the nature of these recordings and insistence of many experts to the contrary leaves a great deal of room for speculation.

Quackers

During the Cold War Soviet ballistic missile submarines began encountering a strange acoustic phenomenon while passing through certain zones on their patrols in the northern seas. Dubbed "quackers" (Russian rendition of a frog noise), these sounds behaved as if they were being emitted by underwater moving objects, but failed to register on the active sonar. When the subs would eventually leave the "patrol zone", the objects would mysteriously disappear after emitting one final "quack".

Exhibiting behavior not unlike a living being or manned vessel, the quackers showed obvious interest in the submarines, circling them and actively avoiding sonar pulses. The speed of some of these objects (estimated from Doppler shift of their sound frequency) was in the range of 200 km/h, much faster than any then-known man-made vessel. Contact was attempted on several occasions, but, apart from some obvious reactions (changing the pitch or origin point of the sounds), nothing came of it.

The peak of quacker activity occurred at the end of the 1970s, when these zones of activity appeared to multiply and spread from the Barents Sea to other areas including the North Sea and the North Atlantic. The Soviet Academy of Sciences was brought in to form a joint commission with the Navy to address the national threat these posed, but after a decade of inconclusive findings and the decline of the phenomenon the commission was disbanded.


https://www.youtube.com/watch?v=mpPGZqrzM0s

"52-Hertz Whale"

A whale of unidentified species has been detected numerous times in multiple locations since it was first detected in 1989 producing an incredible 52-Hertz song significantly louder than the largest known whale species, the Blue Whale (15-20 Hertz). Though its migration pattern seems similar to that of Blue and Finn whales the pattern of its song matches no known species. Only ever detected on hydrophone the appearance and size of this lone individual remains a complete mystery leaving many to speculate as to whether it may be a malformed (gigantism) or deaf individual of a known species. All that is certain about the 52htz whale is that it has been detected every year without fail since 2004 traveling an estimated distance of 708-11,062km during its migration.

"U-28 Creature"

Contained in the official report of German U-Boat 28’s sinking of a British transport is the astonishing account of a giant creature caught in the explosive aftermath. On July 30, 1915, U-28 torpedoed the British cargo ship Iberian. Shortly after disappearing beneath the waves, the wreckage exploded blasting a 60ft (18.3m) long crocodile-like creature nearly 80ft (24.4m) above the water, where it was observed by U-28’s captain and commanders. As the creature writhed among the debris, the crew noted that it had “4 legs with large webbed feet, a long, pointed tail and a head which also tapered to a point.” This official military report gives incredible backing to the story as to fabricate such a description would have been career suicide.

"UB-85 Atrocity"

On April 3, 1918, in the waning days of WWI, the British patrol vessel Coreopsis came across the disabled German submarine UB-85 off of the Belfast Lough of Ireland. The German crew were taken aboard the Coreopsis as prisoners of war after abandoning ship and their Captain, Gunther Krech, was later interrogated telling British Officers that the U Boat had surfaced the night before in order to recharge the submarine’s batteries. While Krech and a handful of his men were getting some fresh air an abrupt surge rocked the ship as a heavy weight seemed to bring down the starboard bow. Out of the darkness of the night a strange beast of immense proportions climbed out of the ocean onto the side of the vessel. The beast was described as having large eyes set in a “Hot sort of skull” (which was relatively small to the rest of its bulk) with teeth that could be seen glistening in the moonlight. With the creature holding fast to the U-boat’s forward gun mount the crew opened fire fearing the behemoth would sink or capsize the vessel. Eventually the creature relented disappearing back into the dark waters, but not before leaving the damaged UB-85 incapable of submerging and vulnerable on the surface resulting in it subsequent capture.

"USS Stein Monster"

In 1976 the US Naval Destroyer USS Stein was forced to return to port in San Diego after suffering the failure of its SONAR system. The drydock inspection revealed serious damage to the SONAR dome of the ship with cuts as long as 4ft (1.2m) across its protective rubber coating. Embedded in those cuts were the remains of sharp, curved claws often associated with giant squid attacks. The claws left on the USS Stein, however, were from an animal far larger than any previously discovered. Some estimates place the squid’s size at up to 150ft (46m) in length… in a class far beyond that of known giant or colossal squid species.

"Dylatov Pass Incident"

The Dyatlov Pass incident was an event that resulted in the mysterious deaths of nine experienced skiers north of the Ural Mountains on the night of February 2, 1959. It happened on the eastern side of Kholat Syakhl (“Mount of the Dead” in the native Mansi people’s tongue) on their planned course to the peak of Otorten (“Do not go there”). Since then, the mountain pass where the incident occurred has come to be known as the Dyatlov Pass after the group's leader, Igor Dyatlov.

Though the details and chronology of the events leading to the group’s tragic demise remain uncertain it is believed, based on their journals, that they had made camp on the pass after realizing a navigational error during bad weather had led them higher on the mountain than they had originally intended. Their bodies were all found away from the camp without proper dress or shoes suggesting they had hurriedly fled their camp in the night, their tent seemingly cut/torn open from the inside. The bodies exhibited a variety of puzzling injuries, though five apparently perished from Hypothermia, three had suffered severe internal trauma such as crushed skulls or shattered ribcages, but with no signs of external injury. The ninth victim was missing her tongue, eyes and part of her lips and had strange macerations on the skin of her hands. Several of the group were also found wrapped in torn strips of clothing presumably taken from the bodies of those who were already dead.

Though the culprit was officially ruled by an investigation to be a “compelling force of nature”, theories as to what actually happened range from a Russian experimental weapon’s test to an Avalanche to the phenomenon of St. Elmo’s Fire produced by a high altitude electrical storm. A few victims even exhibited elevated levels of radiation on their clothing and when brought back for burial were noted as having orange tinted skin and white hair as if they had been prematurely aged. All that is certain is that Russian Officials have been less than forthcoming with evidence and details which many believe to be a cover up.

The Mansi people often spoke of strange lights and creatures that inhabited the mountains but were not dangerous if left alone. While the Mansi were originally suspect in the incident they were quickly ruled out and even had a similar account of their own regarding a Mansi hunting team which had met a similar fate when forced to make camp on the mountain years earlier, insisting that the “lights/creatures” were responsible. Some have even gone so far as to assert the incident was an Alma (Russian Yeti) attack on the camp, the creature brutalizing two of the victims and forcing the others to flee into the night where they died from exposure (possible mutilating the female skier after her death).

Giant Outer Solar System Mystery Planet: Tyche

The idea of Hypothetical super massive gas giant at the furthest reaches of our Solar System was first purposed by scientist John Matese in 1999 citing the origin points of long period comets from within the Oort Cloud, these hypothesized points forming what seemed to be a circular/orbital pattern within the cloud as if a massive celestial body was passing through it. The hypothesized long period orbit of such a distant planet (25-30 million years) would also coincide with the 27 million year cycle of mass extinctions on Earth presumably the result of increased comet bombardment within the Solar System.

Such a massive gravitational body at the furthest edge of our Solar System’s gravitational influence would also finally explain the long standing mystery of our Solar System’s seemingly “unbalanced” gravitational equilibrium between that of the Sun and the known planets.

In 2011 NASA’s Wide Field Infrared Survey Explorer Satellite detected an object within the outer Oort Cloud which, though as of yet is unconfirmed, appears to be a planet approximately four times the size of Jupiter. Dubbing the mystery body “Hercolubus”.

Small Inner Solar System Mystery Planet: Vulcan

When observing anomalies in Mercury’s orbit in the mid-1800s, French astronomers hypothesized the existence of another smaller planet closer to the Sun dubbed “Vulcan”. Being that detecting an object so close to the Sun is fairly difficult the mystery planet, should it exist, remains undiscovered until this day though numerous asteroid-like objects dubbed “Vulcanoids” have been observed between the Sun and Mercury while examining images of the Sun itself. Some believe Vulcan did exist at some point in our Solar System’s history but was pulled apart by gravitational forces of its orbit passing too close to Mercury’s, its remains becoming the Vulcanoids we see today. Others speculate that Vulcan may be a Moon or planetoid locked in a binary or exotic orbit with Mercury. Even so, new photographs of mystery objects captured in close proximity to the Sun appear on a monthly basis continuing to fuel speculation.