Per 
Item#: SCP-XXXX
Class: Keter
Special Containment Procedures: SCP-XXXX is to be locked in an antimatter resistant 35 cm titanium-reinforced aquarium, measuring 1000m x 1000m x 700m, over a thickness of 120m. Daily inspection is to be made on SCP-XXXX and meals are to be provided comprising of various meat varieties up to 3200 kg (3.2 tonnes) per serving for a period of approximately three (3) times per day. After a period of four (4) months, water inside the aquarium is to be drained and replaced. Aquarium lighting is to be maintained between 40 to 50 candela at all times. Only personnel with clearance levels of 12 and above is allowed into the containment chamber. No personnel is allowed to conduct physical experiments capable of inducing aggression or provocation towards SCP-XXXX's cognitive and emotional status. In case of containment breaches, site-17 administrators are required to initiate total lockdown on basement level 32 and activate cognitohazard immersion system to prevent any possible breaches made by SCP-XXXX. Evacuation process is to be conducted prior to this procedure.
Any possible loss of or damage of the interior layers of the aquarium caused by SCP-XXXX's physical activity is to be immediately reported to Site-17 security department, with subsequent lockdown and activation of cognitohazard immersion system to be initiated. Should this process fails, the Foundation is to respond with full force, deploying MTF-25 units to restrain SCP-XXXX from causing any further damage.
No personnel without direct authority from the Overseer Council or Class A clearance are allowed to inflict injuries upon SCP-XXXX. Any regenerative instances of SCP-XXXX are to be immediately brought to the attention of The Central command.
Description: SCP-XXXX is a ten-headed (10) aquatic serpentine measuring 350m (1148.29 ft) in body length, 165m (541.339 ft) in each individual neck length and 100m (328.084 ft) in height at lowest head level. SCP-XXXX was discovered by a U2 spy plane near the western coast of Hawaii, within the Pacific Ocean on [REDACTED]. Gender is indeterminate as attempts to identify SCP-XXXX's composition matter via biological means have been largely inconclusive. Body weight is estimated to be around 700 tonnes. SCP-XXXX has a moist, scale epidermis of maroon-red pigmentation composing of several genetically anomalous DNAs. Dorsal ridges composed of largely human tissue and various compositions of iron and steel metals.
- Chemical compounds found inside the blood of SCP-XXXX contains various unnaturally formed hydrocarbons cyanides, and nerve agents that poses serious health threats to a human body. Three bonds are formed between C and N atoms, whilst methyl groups are singly bonded to the sides of the carbon atom (For instance, dimethylcyanide molecules is found in a sample of SCP-XXXX’s blood: (CH3)2CN, thus violating the octet rule of C atom bonded to N, having 10 valence electrons in its outermost shell). Dimethylcyanide, under aqueous solution, has anomalously extreme pH values (approximately 0.9)
- Attempts to find out the chemical properties and reason behind such formation anomaly has been inconclusive in laboratories. However, physical effects is observable, posing a high threat to biological organisms. Variants and its effect is stated inside the addendum.
- Attempts to synthesise (CH3)2CN chemically in the laboratory has been unsuccessful.
Researches have shown that SCP-XXXX secretes nerve agents in its dermatological glands to facilitate several major bodily mechanisms for operating anatomical functions and to deter potential threats. When an object is placed near SCP-XXXX, SCP-XXXX will resort to any means of violence to incapacitate and kill the target, before consuming them entirely. It is found that SCP-XXXX releases larger amounts of soluble nerve agents to kill the target, and there have been even traces of suspected antimatter when enough adrenaline is being supplied to the body system. When provoked, SCP-XXXX emits a loud roar, capable of exceeding 776 dB at its highest audible level. This roar is capable enough to shatter glasses or any other forms of brittle objects within a 700m radius. Since the vision field of SCP-XXXX is limited and having significant sensitivity to light, it relies heavily on auditory and olfactory senses to perceive the movement and the presence of surrounding objects within its proximity. SCP-XXXX respiratory system comprises largely of the intake of aqueous hydrogen sulphide (H2S) gas via gills located at the upper neck portion of the head to breathe and exhale carbon dioxide gas in return (CO2). Attempts to find out the scientific process of the conversion of these chemical compounds inside SCP-XXXX's respiratory system has been inconclusive. SCP-XXXX also utilises its fins located at its head to navigate and manoeuvre underwater easily.
SCP-XXXX releases antihydrogen particles to the surroundings when a particular object matter obstructs it. Sources of these biologically generated antihydrogen was suspected to be from the blood vessels. Attempts to find out the anomaly surrounding SCP-XXXX's immunity towards anti matters have been inconclusive. These antiparticles in contact with any existing objects will be automatically annihilated and disintegrated, releasing large amounts of gamma radiations to the surroundings. It is unsure whether antihydrogen particles were extracted from the water supplied within SCP-XXXX's arteries or converted from H2S inhaled. Nasal passages and respiratory tracts within SCP-XXXX is capable of generating surrounding temperature up to 4500 °C (4202 K), igniting gaseous methane and smaller fraction of anomalously bonded particles (NCCR-17 and podavlyat agent) to combust and fire towards targeted objects.
SCP-XXXX is extremely vulnerable to chemical cognitohazards due to its chemical mechanisms that spontaneously activate all neurotransmitters and chemoreceptors. Chemical cognitohazards of Class-VI and above temporarily suppresses the neurological functionalities responsible for controlling the contraction and relaxation of muscles, incapacitating all major functions of SCP-XXXX's muscular system for a short period of time. Antimatter properties of SCP-XXXX, however, is still exhibited from the epidermis.
SCP-XXXX also exhibits various regenerative capabilities. Upon severing the head of SCP-XXXX via its neck, two (2) heads grows around the circumference of the affected wound within approximately five (5) to six (6) seconds.
