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| SCP-XXXX during initial containment |
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Item #: SCP-XXXX
Object Class: Safe
Special Containment Procedures: The estate that houses SCP-XXXX has been purchased by The Foundation under the guise of restoring the properties on the grounds. Security measures are to be limited to a 200cm wire fence with appropriate signage due to the unlikelihood of members of the public attempting to gain access to SCP-XXXX.
SCP-XXXX is to be checked daily by the onsite marine-biology specialist who must log in detail each iteration of SCP-XXXX-1. Furthermore he/she must write a summary of each cycle to be produced for the onsite director once each 9 month cycle is completed.
Instances of SCP-XXXX-1 that do not match any known species, either extant or extinct, require analysis by no less than two Foundation marine-biology specialists and a report must be presented to the onsite director regarding these instances as soon as possible.
Description: SCP-XXXX is a man-made pond, measuring roughly 21x14x2 metres and with an estimated volume of 590,000 litres, located on the ██████ Estate, ████████████████, UK. SCP-XXXX came to The Foundation’s attention when █████ █████████, former resident and owner of the estate died and in his will instructed the entirety his possessions be left “to science”.1
Through unknown means SCP-XXXX will at intervals produce marine life from a pipe located at its greatest depth, roughly in its centre. SCP-XXXX operates on nine month cycles in which it will periodically produce aquatic entities that seem to represent an example of an oceanic food chain. SCP-XXXX will produce instances of SCP-XXXX-1 at predetermined intervals, with each cycle consisting of no less than 3 different iterations and a maximum observed number of 84 iterations. Instances of SCP-XXXX-1 are perfectly to scale and are capable of surviving in SCP-XXXX even if their respective species would not usually be capable of living in fresh-water conditions. Any attempts to alter the water contained in SCP-XXXX have proved impossible, including attempts to increase/decrease temperature or salination.
SCP-XXXX produces one species at a time in varying numbers, each instance of SCP-XXXX-1 is genetically diverse, capable of reproduction and capable of feeding off of the instance of SCP-XXXX-1 previously produced. A typical cycle of SCP-XXXX consists of phytoplankton followed by zooplankton, followed by fish designed to subsist on zooplankton and then an indeterminate number of fish species capable of feeding off of the previous instances of SCP-XXXX-1. In over 90% of cases this is followed by fully aquatic pinnipeds then a species of shark known to feed on pinnipeds. In 10% of observed cycles further iterations of SCP-XXXX-1 will be produced, including orca whales, extinct species of large marine predators, such as megaladons and [REDACTED].
SCP-XXXX does not produce a new ‘predator’ instance of SCP-XXXX-1 until all instances of the previous ‘prey’ iteration are dead. Instances of SCP-XXXX-1 display predation habits that closely resemble those of their respective species. Instances of the final iteration of SCP-XXXX-1 have so far resorted to cannibalism in 100% of observed cases after the full depletion of previous ‘prey’ instances.
Cycles of SCP-XXXX have never been observed to deviate from the length of nine months, with the last instance of SCP-XXXX-1 always dying on the final day from either starvation or injuries sustained from cannibalistic behaviour. The following day the next cycle will begin, as of yet there is no known way to prevent a cycle from ending or beginning. It is unknown whether instances of SCP-XXXX-1 operate independently or are influenced by some unknown external force.
On occasion SCP-XXXX will produce instances of SCP-XXXX-1 that are extinct or currently unknown to marine biologists. It is theorised that these instances that are unknown were not ‘invented’ by SCP-XXXX-1 but as of yet are undiscovered. See document A02-B for a full list of instances of SCP-XXXX-1 that do not match any known extant or extinct species.
