Special Containment Procedures
All known SCP-5406 instances are collectively held within Aquatic Containment Habitat Alpha at Site-402. Instances are to receive the standard maintenance required for their species (see Parazoology Maintenance Manual 78c). New instances are to be provided anatine housing units upon containment/birth; each unit is to have a numerical symbol printed on the surface, designating the instance.
Description
SCP-5406 is a species of molluskoid organisms currently inhabiting large hollow rubber ducks1. Observed instances range in size from approximately ten to twelve meters in length. The rubber ducks the instances reside within are identical to each other., approximately eight meters in height and five meters in length, and composed of a waterproof synthetic rubber.
Utilizing the aperture constructed in the underside of the anatine housing units, an SCP-5406 instance will use their foot appendage for aquatic locomotion. Once in a stationary position, the SCP-5406 instance retracts its foot and will protrude its head from the cavity to consume nutrients from the water. SCP-5406 instances seek nourishment from petroleum contaminated waters. Instances glean this nourishment by ingesting up to 200 litres of contaminated water per hour. Enzymes within the SCP-5406 instance break down and absorb the petroleum within the water before expelling the excess (and now clean) fluid.
Discovery
On 2018/07/20, the Fukuoka Prefectural Police (FPP) received several reports of large rubber ducks approaching the city of Fukuoka and congesting waterways. During their investigation, the FPP was contacted by the Fukuoka Fun Factory, which claimed that 25 of their 50 rubber duck flotation units had been stolen from their enclosure on an inlet of Hakata Bay.
The first SCP-5406 instance was discovered when a local fishing boat attempted to remove a rubber duck from the inlet. Foundation assets intercepted the police report regarding the incident, which included photographic evidence of SCP-5406. In conjunction with the Prefecture government, the investigation was reallocated to Foundation assets.
Foundation investigative agents were sent to investigate the civilian company known as Fukuoka Fun Factory for possible connections to the origin of the SCP-5406. A total of 56 SCP-5406 instances were found within the factory's aquatic enclosure. Genetic analysis indicated that SCP-5406 is an undiscovered relative of the modern Aplacophora, mutated through continuous exposure to the factory's waste products, most of which were petroleum-based.
Through litigious and financial pressure, the Foundation forced Fukuoka Fun Factory to sell their manufacturing facility as well as the aquatic enclosure. After significant modification, Site-402 was established on the property and Aquatic Containment Habitat Alpha around the aquatic enclosure.
Site-402 Report
Site-402.
Site-402 functions as a containment facility for SCP-5406 instances, as well a manufacturing facility for anatine housing units required by new instances.
The public branch of Site-402, the Solutions for Contaminative Petroleum Project, is responsible for securing civilian contracts to expurgate petroleum-related aquatic contamination sites. Once a contract is secured, a Foundation Concealment Team will secure the perimeter of the contamination site and prevent civilian observation of the purging process. Aquatic Transportation Vessel Collipso-1 will transport the required number of SCP-5406 instance to the site, at which time it will release them. A temporary containment net will be established around the instances until the completion of the purging process. Once the process is complete, instances are returned to Site-402.
In conjunction with the Department of External Affairs, the Solutions for Contaminative Petroleum Project collaborates with municipal governments to carry out Sollemnitas Protocols.
The Solutions for Contaminative Petroleum Project earns Site-402 an annual budget surplus of approximately $45,000,000 USD, far exceeding the $5,000,000 annual cost of operations. Due to the financial and ecological benefits of the program, Site-402 has been approved to continue operations until 2030, at which time its status will be reevaluated.