Per 
CAPTION-GOES-HERE
Item #: SCP-XXXX
Object Class: Keter
Special Containment Procedures: All known instances of SCP-XXXX are uncontained, with a confirmed presence in the Pacific Ocean and the Gulf of Mexico. All attempts to isolate instance of the entity(s) itself have resulted in a successful retreat far below the surface of the sand. However one “envelope” has been successfully recovered as SCP-XXXX-3-A, and is currently stored within archive 56J of Site 19.
Description:
SCP-XXXX is an unclassified species consisting of 1 6 9 ████ entities that travel through and inhabit wet or saturated sand. Due to the nature of SCP-XXXX, it has not been directly observed, however the behavior of sand an instance is inhibiting is plainly visible when at or near the surface. Entities are detectible via the rapidly oscillating magnetic field they emit, and are individually identifiable by the unique period of this oscillation.
When not in ‘Travel State’ or contained within an envelope, sand surrounding SCP-XXXX appears to undulate as if undergoing liquefaction and is unable to support any significant pressure. The maximum amount of sand it is able to exert this effect over is unknown, however the estimated mass of this sand has exceeded ███kg.
SCP-XXXX seems to control the movement of sand it inhabits at will, and is able to raise said sand above the surface and form complex shapes. This appears to require great exertion as it has only been observed to do so outside an envelope when threatened.
SCP-XXXX is attracted to objects that it can use to contain inhabited sand, referred to as envelopes. The qualifications for choosing an envelope are unknown. When using an envelope, SCP-XXXX with achieve locomotion through a variety of means including walking, rolling, and sliding across the surface of the sand. Known envelopes and their attached instance of SCP-XXXX are noted in addendum XXXX-A along with conjecture.
SCP-XXXX-1-(A) was found after several identical reports of an unknown person disappearing from the beach by walking directly into the waves around ████████ ██████, California wearing what was reported to be a blue wetsuit. It was easily tagged for tracking using a pneumatic rifle.
Site A119 was created at ██████████, Antarctica to observe several instances of SCP-XXXX found where SCP-XXXX-1’s tracking signal reappeared on the beach. Observation summary available in Addendum XXXX-B. Replaced by static camera observation of beach after the creation of Site 815.
Addendum:
Addendum A:
1-A: Blue Pegasus costume. Note: Observed using both bipedal and quadrupedal motion. Recovered from Site A119 on 5-2-2019, examination found no anomalous qualities.
1-B: Black latex body suit. Note: Successfully given to SCP-XXXX-1, older envelope recovered.
2-A: Mascot costume of ███████████ restaurant chain. Note: Costume consistent with those used for advertising in 1990-1995. Foam has rotted out from the hamburger, and is sometimes filled out with sand.
3-A: Diving suit consistent with those used in early 1900s.
3-B: Helmet from 3-A Note: Fate of body of suit unknown. First observed
4-A: Boat fender of unknown make.
5-A: ████████ Note: Not operational.
Conjecture: All known envelopes (besides SCP-XXX-5-A) have consisted of durable, flexible fabrics or plastics. It has been surmised that flexible natural materials are not durable enough to survive in use before observation or are not used for this reason. Proposed reasons for use of envelope have included: increased ease of land exploration, better retention of moisture, social identifiers, and simply being used as toys.
