 SCP-606 appears as a spherical mass of light, a variable size and intensity. Despite its ability to emit large amounts of light, SCP-606 emits no heat. It does not appear to be composed of any form of matter, and is able to pass through material barriers effortlessly. It is presently theorized that SCP-606 is an entity composed purely of knowledge or information, and information obtained from SCP-606 itself appears to corroborate this. Furthermore, SCP-606 appears to derive sustenance from information, growing in both size and luminosity when provided with sources of information, and shrinking when it is deprived of this.