Keelmarkers

Keelmarkers are a fictional concept originating from the science fiction novel "Children of Time" by Adrian Tchaikovsky. Within the narrative, keelmarkers are a biological adaptation or technology utilized by the sentient arachnid species, the Uplifted Spiders, to mark their territory and communicate.

These markers are not simply physical signs but rather organic secretions that release pheromones or other biochemical signals. When deposited on surfaces, they serve as a form of olfactory communication, conveying information to other spiders about the presence of individuals, the status of their territory, or even potential dangers. The complexity of the signals transmitted by keelmarkers allows for a sophisticated communication system within the spider society, enabling coordination and social organization without the need for spoken language.

The development and use of keelmarkers are indicative of the Uplifted Spiders' unique evolutionary path and their distinct approach to intelligence and communication. They represent a significant aspect of the alien biology and culture that Tchaikovsky explores in his novel, offering a fascinating glimpse into non-humanoid forms of communication and societal structures. The concept highlights how different species might develop unique methods for interacting with their environment and each other.