SCP-553

SCP-533 (also known as Crystalline Butterflies) is a safe-class SCP under the containment of SCP Foundation. It also appears in Unity's 2018 remake version of SCP - Containment Breach.

Description
SCP-553 is a colony of approximately 140,000 winged organisms superficially resembling butterflies. They possess a silicon-based biochemistry and are composed primarily of calcium and silicate compounds. The swarm communicated via echos and would warn the colony when danger occured. They would gather when an adult instance met with danger and sent their mesage. They attack their target with their solid wings, cutting their skin and causing damage.

The primary colony of SCP-553 is to be kept in the cave system they were discovered in - a cave inside China. 125 instances of SCP-553 was kept inside a chamber of Site-37. Any personnel entering the chamber must only use the designated path and be wearing full body protection.

During a containment breach, the negligance of staff members allowed 21 instance of SCP-553 to escape and attacked people who tried to recapture them. 9 of those personnels died instantly after being attacked, while 8 more died of infection after the incident occured. 12 of those instances were later recaptured and would be used in further research.

In SCP - Containment Breach Remake
The swarm of SCP-553 appears as minor antagonists in the 2018 remake of SCP - Containment Breach, where it's found in its temporary containment chamber underground. The swarm of SCP-553 can be seen at the end of the tunnel and would attack the player if they came too close. They would rapidly attack the player for 1 damage each though it would stack up easily. SCP-553 has no impact on the game as a whole and is a showcase.

Trivia

 * This silicate impurity adds rigidity to the creature, giving it a rating from 3.5 to 4.5 on the Mohs Hardness Scale.