SCP-7743: The spiders that I'm made of
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Item №: SCP-7743

Anomaly Class: Keter

Special Containment Procedures: SCP-7743 is currently the centre of a disinformation campaign, consisting of a short web-based story titled "Arachnophagy". Reports of SCP-7743 are to be publicly mocked as attempts to plagiarise or otherwise mimic this story; see Omicron-5 Task Record 002. Instances of T-7743 are to be remanded to Foundation custody by a division of MTF Phi-Eolh ("Provident Trawlers"), with provisional assistance from MTF Nu-13 ("Rasczak's Roughnecks") — once contained, termination or employment is conditional on potential utility and Ethics Committee evaluation.

A population of twelve T-7743 instances is currently in Foundation employ at Sites -64 and -90. Instances are classed as E-Class personnel, and are to be afforded limited recreational and social privileges, on the condition that all external orifices with exception of the eyes remain artificially sealed during work hours. No persons with arachno- or entomophobic tendencies are to be assigned to the same projects as any T-7743 instance.

Description: SCP-7743 is a phenomenon affecting humans in the northern coastal region of Peru. Affliction by SCP-7743 is contingent on three factors:

  1. The target of the anomaly (T-7743) must be an arachnophobe, or otherwise express strong negative feelings towards creatures of the order Araneae (spiders).
  2. T-7743 must have little or no knowledge of the pre-Colombian Cupisnique culture.
  3. T-7743 must have died naturally and non-violently while sleeping, and not have been discovered by any other person for at least three hours following brain death.

Once the anomaly is active, T-7743 will become the locus of a compulsion effect causing all spiders within a large radius to converge on the body and enter through the mouth. The radius in which this occurs increases at a rate of around two kilometres per hour, and the compulsion will cease only when a critical mass of spiders (equal to around 25 kg of biomass) is present within T-7743.

The spiders within T-7743 (collectively designated SCP-7743-1) will perform macroscopic reconfiguration of the subject's internal organs, producing adhesive webbing to act as both a binding agent and as synthetic tissue. Most portions of the digestive and renal systems will be quickly consumed, with the exception of the stomach, pancreas, and large intestine, which will be ruptured and fused into a single large sack. The original SCP-7743-1 will lay eggs within this sack, which will hatch in under four hours — subsequent generations of spiders will display various anomalous adaptations, including:

  • Complete resistance to the acidic and alkaline conditions found within the human body.
  • Large holes in the exoskeleton revealing membranes able to perform respiratory functions on a much larger scale.
  • Extended external digestive systems capable of releasing near to 100% of energy stored in food.
  • Nerve fibres extending from the legs, allowing groups of instances to act as partial substitutes for brain tissue.

These modifications increase in potency and functionality over time, and after multiple years will result in discrete micro-ecosystems of spider-variants.

With these modifications, SCP-7743-1 will eventually fulfil all internal bodily processes at equal or greater efficiency than the former organs, cannibalising each-other and reproducing to maintain the quantity of spiders within T-7743. The brain, skin, and outward-facing sensory organs are the only aspects of the body to not be replaced, although the brain will be augmented with bundles of infant spiders to increase mental processing power. After several months (dependent on various external factors) T-7743 will be restored to a fully-functional, sapient organism, with no anomalous differences in behaviour to their pre-mortem selves. Despite mostly being unwell persons, or those of advanced age, instances under long-term study have proven to be (on average) both mentally and physically healthier than baseline humans. Due to the self-sustaining life-cycle of SCP-7743-11, and the ability of some spiders to physically replace non-spider tissue at the cellular level, T-7743 instances do not undergo senescence or deteriorate over time. Damage to the body caused by external factors can be easily repaired for the same reason, and even large amounts of blunt-force trauma or crushing may be repaired by the colony given sufficient time2.

Experimental evidence has shown that SCP-7743-1 can be transmitted to both living subjects and the recently deceased (time of death <6 hours, damage to body minimal) by oral, rectal, or genital contact. Further research is ongoing.

Addendum | Proposed update to Containment Procedures:

Proposal Date: 2019-09-11
Reference №: REV-7743-MSTHL-01
Summary: "Update in-line with recent O5 Council decision"


As of 2019-09-09, Project Mesothelae is in full effect. Ingesting harvested SCP-7743-1 is currently considered a standard form of longevity treatment amongst crucial personnel; a list of affected personnel in a given facility will be provided by the Site Personnel Manager on request.


Current Status: APPROVED, EDIT PENDING

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