Sharks are created in conjunction with new blocks on the blockchain, and the attributes of each new shark are based purely on the unique digital fingerprint of a specific block (i.e. the block hash). This means that no one can predict or control the appearance and attributes of the Sharks. Furthermore, this means that the size of the CKS grows with the blockchain itself. As no one can predict the block hash before the block is mined, no one (not even the game developers) has control over the monster world.