Homeless Heterotroph Sandbox A
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The nature of SCP-#### is widely found to be disturbing and ethically wrong. Personnel accessing this document are to be aware of this and allowed to act upon this information at their own discretion. If you have been assigned this document by a supervisor, please disregard this warning.

Item #: SCP-3804

Object class Safe

Special Containment Procedures: Hibernating instances of SCP-3804 are to be contained in a modified FoundationSmart™ standard containment locker. Said locker is to be outfitted with a climate control system cycling though a temperature of 35-40°C on a daily basis. The humidity setting is set at the discretion of the containment liaison presiding over aforementioned locker.


Multiple hibernating SCP-3804 instances

Twice a week, the health and wellbeing of SCP-3804 instances are to be recorded and published to the Foundation digital archives. Hibernating SCP-3804 instances found to be in unhealthy conditions may be relocated to a water-bath running a constant temperature of 37°C for a period of time determined by the presiding containment liaison. Instances of SCP-3804-2 found to be in unhealthy conditions are to be handled in accordance with the wishes of the supervising researcher.

Instances of SCP-3804-2 found outside of containment conditions are to be neutralized either by the surgical removal of SCP-3804-1 from the host, or the termination of the SCP-3804-2 instance. The distinction as to which method of neutralization is used is at the judgement of the Foundation personal who discovered said instance. Generally surgical removal is preferred, however in latter stages, termination is widely regarded as more humane. The neutralization of a wild SCP-3804-2 is to be followed with the distribution of appropriate amnestic to any civilians involved.

Description: SCP-3804 is a parasitic organism with a resemblance to a commercial latex condom. Instances of SCP-3804 were first reported by civilian sources on ██-██-20██. Since then, instances of SCP-3804 have been noted to manifest in the aftermath of every category ██████ or higher tropical storm to have reached the central landmass of either of the continental Americas.

Instances of SCP-3804 have been observed to manifest in stagnant bodies of water within densely populated areas. The Foundation has yet to observe the physical creation of an SCP-3804, and presumes the method of creation to be anomalous.

Upon creation, instances of SCP-3804 appear as chrysalis-like structure that bears a distinct resemblance to the packaging of a latex condom. The SCP-3804 chrysalis can be distinguished from said packaging by its coloration as it is entirely jet-black with reflective silver fringes. Inside of SCP-3804 is SCP-3804-1, an organism with a physical resemblance of a latex condom.

Whilst inside the chrysalis an instance of SCP-3804-1 remains inanimate. SCP-###-1 becomes animate only when the chrysalis is ruptured. This process is poorly understood and believed to be anomalous in nature.

The SCP-3804 chrysalis itself can withstand roughly 5 years before succumbing to natural decay and deterioration. Should an instance of hibernating SCP-3804 become dehydrated, the chrysalises containing it will shrivel up and expire, rendering the SCP-3804-1 inside permanently inanimate.



The anatomy of an instance of SCP-3804-1 is dysfunctional and incredibly simple. SCP-3804-1 lacks any internal organelle except for the framework of a non-functional cardiovascular system. SCP-3804-1's ring-like opening functions as a circular artery, draining into multiple thin vein-like tubules that run down the pouch-like aspect of SCP-3804-1's body. Connected to these tubules is a durable rubber-like membrane of cells that gives SCP-3804-1 its distinctive condom-like appearance.

Instances SCP-3804-1 are organic, and rely on pulmonary circulation of blood for sustenance. An SCP-3804-1 however, lacks the organelles to create, maintain and circulate blood and will perish from asphyxiation if not able to connect with another organism's cardiovascular system within 4.5 minutes of leaving its chrysalis.

An SCP-3804-1's anomalous properties manifest if the internal portion of said SCP-3804-1 comes into contact with a mammalian cellular surface near a fairly superficial artery. Immediately, the internal membrane of SCP-3804-1 will become animate and begin constricting what-ever tissue it surrounds. During this process, SCP-3804-1 will secrete a variety of digestive enzymes capable of destroying many common cellular tissues.

SCP-3804-1 will continue this process until it comes in contact with a flow of arterial blood. At which point SCP-3804-1 will begin fusing1 itself to any organic surface making physical contact with it. After this process, SCP-3804-1 will become inseparable from its host by conventional means. The host is then referred to as SCP-3804-2.

SCP-3804-1 will sustain itself by rerouting its own vascular tubing into the cardiovascular system of the SCP-3804-2. Once sustained, SCP-####-1 will begin to consume and replace tissue in the immediate vicinity of itself. SCP-####-1 has shown to be able to digest almost all cellular components. SCP-3804-1 has been observed to grow around components it fails to digest.

SCP-3804-1 will grow in-place of lost tissue on the part of SCP-3804-2. SCP-3804-1 will retain the general form of the structure it replaces, however will not retain its organelles or functions. SCP-3804-1 contested regions of SCP-3804-2 are noted to grow various internal and external structures during this process. To date, the growths of the following structures have been noted. OK

Structure Acquired Description Image of Structure Acquired
Proliferating Angiogenesis The rapid growth and acquisition of numerous arteries connecting SCP-3804-1 to the vascular system of SCP-3804-2. The most commonly observed structure acquired in SCP-3804-2 instances to date. Image taken from the postmortem of ████, ████ the first recorded instance of SCP-3804-2 discovered by the foundation. AA3
Epidermal Osteogenesis A slow and gradual process whereby the immediate surface of SCP-3804-1 will gradually harden into a carapace of compact bone. To date, this process has only been observed on a cellular level in instances of SCP-3804-2 that have survived with SCP-3804-1 for roughly two years. Image taken via electron microscope from the pseudo-penis of SCP-3804-2-E2129, a female Crocuta crocuta. AB1
Abnormal Bone Growth The expansion of red and yellow marrow though the insertion of modified host stem-cells formed by SCP-3804-1. This process is followed by tumor-line budges that bud from the superficial aspect of the effected bone and gradual grow into scaled replicas of the distal or medial head of a random long-bone within SCP-3804-2's body. Image taken from the postmortem of ██████, ███. Object removed from between the 6th and 7th vertebra. AB3
Epidermal Sphincters The acquisition of abnormal sphincters breaching the surface of the body, observed to form within the tissue of SCP-3804-1 itself, as well as within contested areas of the host SCP-3804-2. These sphincters seem to function to release gas built-up from SCP-####-2's consumption of SCP-3804-1. It should be noted that it remains unknown why SCP-3804 develops these structures, as the consumption of the body frequently provides its own methods of alleviating gaseous buildup. Frequently, these sphincters become infected. Typically within 4 days of development, a layer of SCP-3804-1's epidermis will grow over the Sphincter. Leaving a small cavity in the body. Image taken from SCP-3804-2-11, a civilian instance of SCP-3804. AB2

SCP-3804-1 will assimilate as much of SCP-3804-2's bodily tissue as it can, destroying any tissue not directly related cardiovascular system. This process has proven to be universally fatal for both SCP-3804-1 and SCP-3804-2. Typically, instances of SCP-3804-2 will expire from the effects of prolonged deviation from bodily homeostasis.

Addendum: Prognosis and treatment of SCP-3804-2 instances
The assimilation of an instance of SCP-3804-2 by SCP-3804-1 is measured on a basis of the general prognosis of SCP-3804-2 in relation two three stages of physical wellbeing.

At stage one of an SCP-3804 infection, the removal of contested tissue would hinder the wellbeing of SCP-3804-2, but wouldn't exclude them from continuing to live a civilian life. (IE: The removal of a foot, finger, or small portion of non-vital tissue.) The neutralization of SCP-3804-1 within a stage one instance of SCP-3804-2 is to be followed by amnestic treatment and a return to civilian life.

At stage two of an SCP-3804 infection, the removal of contested tissue would preclude the instance of SCP-3804-2 from living a civilian life unassisted. (IE: The removal of Limbs, internal reproductive structures and surrounding tissues, non-vital organelles of the endocrine system, the cerebrum, a portion of non-vital tissue large enough to significantly deform SCP-3804-2.) The neutralization of SCP-3804-1 within a stage two SCP-####-2 is to be followed with the formal induction of the SCP-3804-2-EX into permeant foundation custody under a Class-A designation. This is to be followed by the amnestic removal of SCP-3804-2-EX from the memories of anyone suspected to have known said SCP-3804-2-EX to a personal extent. All instances of SCP-3804-2-EX capable of communication are to be offered the option of euthanasia. Instances of SCP-3804-2 incapable of communication are to be euthanized.

At stage three of an SCP-3804 infection, SCP-3804-1 has rendered SCP-3804-2 incapable of survival without the contented cardiovascular tissues. (IE: The removal of critical veins, or arteries leading to vital organs.) Unless the vested interests of SCP-3804 research specify otherwise instances of SCP-3804-2 with stage three infections are to be terminated and wiped from the memories of non-foundation personal through [REDACTED]. The remains of SCP-3804-2 and SCP-3804-1 are then to be destroyed via incineration.

Addendum: Risk mitigation efforts As of ██-██-20██, a Joint Task Force has been formed in conjunction with the FBI-UIU, and the GOC to attempt to locate and contain instances of SCP-3804 in the aftermath category ██████ or higher tropical storms. This Task Force is designated as TF221 by mutual agreement between all three organizations. TF221 operates under the alias of a relief-workforce assembled out of altruism and is composed primarily of low-ranking GOC personal and MTF-Trainees. Since its establishment, TF221 has managed to lower the incident rate of encounters between civilians and SCP-3804 by roughly 87%.