SCP-5XXX
Item#: SCP 5XXX
Object Class: Pending [See Addendum]
Containment Procedures:
-REVISION_11/08/20XX- Concerns have been raised by Foundation personnel regarding confusion over proper procurement, selection and allocation of containment facilities, procedures and MTF units to assign to SCP 5XXX as a result of frequent contradictory changes to its object class.
As a result, oversight of 5XXX’s containment has been turned over to Foundation Senior Researcher Vincent Stogellano, who has volunteered to use his CDP resources to monitor SCP 5XXX until O5 command reaches a consensus regarding its object class, and subsequent containment procedures.//
Item Description: SCP 5XXX is a cephalopod, that apart from size, otherwise seems to belong to the genus Octopus Cyanea. Its skin pigmentation is a highly luminous red, a color never before observed in cephalopod organisms and believed to be one of its anomalous properties. It measures 1.2 meters from the top of its cranium to the tip of its tentacles. Observation reveals that 5XXX achieves standard locomotion in similar fashion to other cephalopods in its genus, by using its tentacles to propel itself through the water. However, it has been noted that when SCP 5XXX enters a state of hostility, it seems to move through unknown-possibly anomalous-means; in this state, SCP 5XXX’s splays its tentacles outwards around itself in a constant, unmoving position. How it achieves locomotion in this state is unknown.
SCP 5XXX’s temperament is curious, docile-and in some cases even jovial-by default; its behavior will remain unchanged from these observed parameters so long as the individual conversing with it does not show signs of arrogance, hubris, disrespect, or hostile intent towards itself, or any of the items sequestered under its supervision. Should 5XXX detect any of these emotions or intent coming from those it converses with, it may become hostile, which will result in it summoning instances of SCP 5XXX-1, which are large, pale cephalopods that appear to belong to the genus Mesonychoteuthis Hamiltoni (or, colossal squid).
Instances of 5XXX-1 have been measured to be as long as 26 meters, and attack those they come in contact with on sight. Autopsy of terminated 5XXX-1 corpses has revealed a complete lack of a brain or any cerebral analogue, as well as advanced decay of interior organs that do not correspond with time of termination. This has led Foundation researchers to believe that all 5XXX-1 instances are in fact, dead, and are being telepathically controlled by SCP 5XXX. 5XXX-1 instances have been recorded to pursue targets relentlessly and without cessation, unless SCP 5XXX calls them back. 5XXX-1 instances have been observed to either kill targeted organisms on sight, or seize and “apprehend” them, though no organism-human, or otherwise- apprehended by 5XXX-1 has been seen again alive. In one case, a 5XXX-1 instance pursued a D-Class personnel outfitted with scuba diving gear, a harpoon gun and a high speed diver propulsion device for over 20 miles, before reaching the shore at an undisclosed location. When the D-Class left the water and began to run on the shore, the 5XXX-1 instance also left the water, and travelled approximately 12 feet, catching up to the D-Class before capturing him with its tentacles, and dragging him back into the sea. The D-Class’ remains to this day, have not been found. Subsequent tests, recorded encounters with 5XXX-1, and theories regarding their relation to SCP 5XXX can be found in the attached addendums at the bottom of this entry.
Intelligence tests have revealed that 5XXX is sentient, sapient, moderately intelligent, and capable of advanced communication with humans, as well as basic communication with other animals outside of its genus. 5XXX seems to communicate with humans within a proximity of 20 meters telepathically; individuals who have conversed with it at length describe its speech as “clear and audible, yet voiceles”, akin to the voice humans hear in their minds when they think. Despite this ability, however, it does not appear to be able to read the mind of any being outside of itself, though it has displayed an advanced aptitude for determining the true intent of those it converses with. For those farther away than 20 meters, the cephalopod seems to communicate remotely with them by emitting highly dense air-filled bubbles that are vaguely red in hue. These bubbles have been recorded travelling for up to 219 miles, at speeds of up to 90 km/h; SCP 5XXX also appears able to control the navigational route of these bubbles, as they have been recorded taking detours around obstructions, and taking the shortest possible route to 5XXX’s intended target, whenever multiple paths were available. Records of these experiments and interview logs are available at the bottom of this entry, though accessibility may vary depending on clearance. See attached addendums for details.
What is perhaps the most notable of SCP 5XXX’s anomalous properties, however, is its innate knowledge of the general environment and layout of Earth’s oceans, as well as the locations of several objects, artifacts and sea-faring animal species therein. While subsequent testing revealed that 5XXX does not know the location of all things at sea, it seems to know where to search for them, and has been seen using problem solving strategies-such as process of elimination-to locate the item(s) in question.
SCP 5XXX was first encountered by the Foundation on April 16th, 20XX by deep sea MTF elements from Site-27, Site-44, Site-90, and Site-101 during operation Facilioris Transmissus Aeternam, the details of which are available [here] to all Foundation personnel with Level 4 clearance or above.






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