On November 27th, 1998, a joint investigation led by both the SCP Foundation and the Global Occult Coalition was started in order to research an Ekhi-Class anomaly that was roaming the depths of the Mariana Trench. When the assigned bathyscaphe, the SCP/GOC-B Toi, reached approximately 4.8 kilometres of depth, an SCP-5961 event occurred.
As the water began swirling, the nearby environment began submitting itself to the anomaly's effects regardless of status or nature. The SCP/GOC-B Toi was also affected during this period, leading it to be ejected upwards at extremely fast speeds. The water was later revealed to reach space, creating several seaquakes that reached the coasts of the Philippines, China and Japan while not reaching Deep Sea Site-72.
The following log depicts the events as recorded by Foundation and GOC agents Carbon and Jerden within the SCP/GOC-B Toi, which also reached the limits of the Thermosphere:
[BEGIN LOG]
Z-72 Carbon: Wuh?
(The agents begin looking onto the chamber's floor as it begins shaking.)
S-51 Jerden: Command, command. Do you copy?
Command: Roger that, Jerden. Copy.
S-51 Jerden: The vessel is shaking, command. Repeat. The vessel is shaking.
Command: Wait, what?
Z-72 Carbon: It's not shaking; it's spinning!
(The agents stumble to the floor as the SCP/GOC-B Toi begins elevating. Z-72 Carbon begins panicking, while S-51 Jerden tries to contact command.)
S-51 Jerden: FUCK!
Z-72 Carbon: What's happening?
S-51 Jerden: Hell if I know!
(Z-72 Carbon begins crawling towards her seat, trying to reach her security belt. S-51 Jerden does the same.)
Command: Carbon? Jerden? Do you copy?
S-51 Jerden: Yeah. What's going on? Are we pulling up, or..?
Command: No. There's something g-
(The signal cuts.)
Z-72 Carbon: Oh shit.
(The ship's sonar begins recording Deep Sea Site-72, as Z-72 Carbon reaches for an oxygen mask on the roof of the vessel.)
Z-72 Carbon: When the fuck did we put on so much gas?
S-51 Jerden: I don't know!
(The signal comes back intermittently.)
Command: Why is the- [STATIC] -ter pillar o- [STATIC] -trench?
S-51 Jerden: What was that?
Command: Why is there a water pillar on top of the trench? OH GOD, IT'S COM-
(The signal cuts once again.)
Z-72 Carbon: Oh god.
(The cameras stop recording, although signals can be sent through the agents' microphones.)
S-51 Jerden: I can't hear anything outside except water.
Z-72 Carbon: I mean, yeah, it's-
Z-72 Carbon: Oh, look, camera's broken.
(The vessel stops moving, completely suspended mid-air.)
S-51 Jerden: Wait. Wh-
Z-72 Carbon: Shit, we're in a buoy now.
S-51 Jerden: What? What do you mean?
(Z-72 Carbon shrugs.)
Z-72 Carbon: We're in space.
S-51 Jerden: You're saying the fucking vessel is…
Z-72 Carbon: Yes.
(The vessel begins moving towards the Earth once again.)
Z-72 Carbon: The vessel is buoyant. And sometimes, some things in life simply float.
(Silence. Carbon looks around the chamber before shrugging.)
Z-72 Carbon: Then why not let us emerge?
(The microphones cut as the vessel falls.)
[END LOG]
While the object was recorded reaching 55 kilometres of height, the impact was recorded on the Mariana Trench, causing the second round of seaquakes. All video recordings of the SCP-5961 event taking place were cut out and all information regarding the anomaly was expunged on social media.
The aftermath of the event resulted in several consequences, such as 1.259 casualties and 3.467 injured people. As a result, Foundation personnel disseminated along the media the fact that this was, indeed, caused by Cover Story G.54 ("Tsunami/Seaquake"). Due to Deep Sea Site-72's status as an underwater site, the SCP-5961 caused minor damages within the facility.
The SCP/GOC-B Toi was reported missing. Instead, reports of a large pufferfish and two small blowfishes were brought up near Deep Sea Site-72.
A few minutes prior to the impact, the agents' cameras began recording once again. As the camera became blurry, the anomaly began recording the SCP/GOC-B Toi's transformation into a large pufferfish, as Carbon and Jerden tried to leave the capsule. Instead of being crushed by the hydrostatic pressure, though, both agents became pufferfish.
The following are agent Jerden's last words prior to his disappearance:
what is going on
why is [illegible] a bubble
why am i a pufferfish
oh
blurp
beware the buoyancy