Per 
SCP-####
Class: Keter
Special Containment Procedures: Undersea seismographs are to be installed at 2Km intervals at a range of 10Km from all known SCP-#### instances larger that 2Km in approximate length. A dedicated Foundation research team is to be observing and recording all instances of SCP-####-1, SCP-####-2 and SCP-####-3. In the event of SCP-####-3, the research team is to issue a warning to any communities within predicted impact zones of an impending tsunami.
Due to the enormous size and quantity of SCP-#### instances, Foundation satellites are only to capture images of SCP-#### instances where abnormal seismic activity is measured.
Description: SCP-#### is a creature belonging to the Pteriomorphia subclass (common to scallops, mussels and oysters) that has grown to an abnormally colossal size. Due to this, the ‘Mouths’ of SCP-#### are commonly thought of as undersea trenches.
The youngest instances of SCP-#### are predicted to be approximately 2000 years of age while the oldest are presumed to be approximately 200 million years of age.
The largest known single instance of SCP-#### is located beneath Alaska and the eastern most point of Russia. It is known as the Aleutian Trench. While the Atacama trench was originally thought to be the largest, marine biologist Dr [REDACTED], quickly highlighted inconsistencies pertaining to the ‘Mouth’ shape and instead theorized that multiple SCP-#### could live in close quarters to one another. The theory was later proved when abnormal seismic activity was recorded at and around the northern half of the trench while the southern half did not.
SCP-####-1 are infrequent, abnormally large waves commonly referred to as ‘Rogue Waves’.
When SCP-#### perceives a threat, it partially closes its shell, in similar fashion to that of a common scallop or clam. The water that is displaced in such an event is the cause of SCP-####-1.
Note that a common perceived threat is that of the shadow of large boats and sea creatures.
SCP-####-1 are unpredictable and instantaneous and therefore impossible to protect against.
Note that larger SCP-#### are incapable of causing SCP-####-1. Due to their immense size, any
SCP-####-1 instance caused by a larger SCP-#### is immediately upgraded to SCP-####-3 and all Special Containment Procedures are to be immediately enforced.
SCP-####-2 are abnormally deep troughs between waves and the inverse of SCP-####-1. Also known as ‘Rogue Holes’.
Note that SCP-####-2 are uncommon due to the nature of SCP-####. SCP-#### are recorded to be cautious creatures which rarely open their shell rapidly.
SCP-####-2 are unpredictable and instantaneous and therefore impossible to protect against.
SCP-####-3, commonly known as a ‘Tsunami’, are infrequent but remain the largest threat to human life that SCP-#### can generate.
Addendum 1: The following is an excerpt from Dr [REDACTED]’s case study and personal notes.
“The age of these creatures is astonishing. Living for 200 million years would mean they had witnessed a full scale extinction event. It would make sense that they, being filter feeders, could have cleaned the earth’s oceans of any detrimental components in record time.”
“It would explain why hydrothermal vents form as they do. SCP-#### lives as a replacement lithosphere and filters sea water through its immense body, heating it to extreme temperatures. When it eventually expels that sea water it would do so from extreme depths and any foreign particles that it contained would remain clumped at the sea floor.”
Addendum 2: The following is an excerpt taken from eccentric Jackson [REDACTED]’s personal logs surrounding a deep sea expedition.
“Log one, 12th of April 2018. I have decided that quantum physics is not a good enough explanation. I suspect that the once mythical rogue waves have a much more real cause and I am going to find out what it is. My investigation will centre in areas with high concentrations of rogue waves. From there I will carry out a series of deep sea dives and record my findings.”
“Log three, 17th of April 2018. After much research into the tribulations caused by rogue waves in the past century I have decided to start close to home. The North Atlantic will be the site of my first investigation. Vast as it may be, I have a plan. Though it’s nigh on impossible to search an entire ocean, I have realised that I do not have to. Shipping lanes are my solution. I simply have to put out a call for the times and locations of any rouge waves to the corresponding ports. While I wait for those results I will have ample time to organize my expedition.”
“Log six, 3rd of November 2018. The preparations are complete. I have a wealth of information and, rather surprisingly, a good idea of where to look. I am setting out tomorrow as a passenger on the S.S. Morningstar, whose captain was gracious enough to allow me a few days of weighed anchor wherein I will use the submersible I have acquired to do my research.”
“Log eight, 10th of November 2018. I sit here now, nervous and alone in the cockpit of my yellow submarine, watching the light of the world fade away as I descend. I know not what I will find but I am excited by this new experience.”
“Log nine, 10th of November 2018. The trip to the sea floor was boring and uneventful. I am terribly cold and resolutely sick of staring into the darkness. It’s an odd thought but I feel that my presence is not welcome.”
The recording continues.
“I have happened upon an undersea trench and intend to descend as far as this little submarine can manage.” Jackson is silent for a moment. Faint rumbling can be heard and Jackson can be heard falling to the floor of the submersible. Jackson’s voice returns in an astonished tone. “The walls… moved… that surely wasn’t an earthquake, much less a trick of the light. I must return immediately.”
“Log ten, 10th of November 2018. When I arrived back at the ship I immediately made my way to the captain and asked him if there had been any unusual proceedings. The captain seemed rather exhausted, as if he had just weathered a terrible storm. He spoke of a wave that had dwarfed the others by no small order.” Jackson can be heard laughing. “To think that I was at the epicentre! I feel that I am on the cusp of a grand discovery.”
Log thirteen, 13th of November 2018. Nothing. Nothing since that fated day. Was it simple luck that I was witness to that event? I have retraced my steps to that trench over the past two days and can only conclude that I was not its cause. Today is the last day that the captain will allow me to stay so it seems this will be my final expedition during this cruise.”
This is the final log left by Jackson [REDACTED].
Approximately two (2) hours after Jackson [REDACTED] deployed himself into the depths of the North Atlantic Ocean, a SCP-####-1 (rogue wave) was experienced by the S.S. Morningstar. The S.S. Morningstar sustained extreme damage to its bow and superstructure. Approximately half of its crew, including its captain, perished. The ship and surviving crew returned to port [REDACTED] on the 27th of November, 2018.
It is assumed that Jackson [REDACTED] was crushed by the complete closing of a SCP-####’s ‘mouth’.
Addendum 3: The following is a running joke amongst the Foundation research team.
“If the even the Mariana trench closes, there must be something big on the way.”
While a joke, the question remains: What is so terrifying that even the largest creature on the planet would hide from it?
The answer, as implied by Dr [REDACTED], is a meteor. However, smaller SCP-#### exhibit the same response to the shadow of boats. It is not known if SCP-#### has a natural predator.
