Shikokus
Shikokus is a fictional term used in speculative fiction to describe an intelligent marine cephalopod species native to the imagined Shikokan Sea. The name appears in multiple works of world-building and tabletop role-playing games, where it denotes a coherent ecosystem with distinct biology and culture.
Physiology and signaling: Shikokus typically measure 1.8 to 2.2 meters in mantle length, with eight arms and
Habitat and diet: They inhabit temperate, low-light shelf waters and deep-reef zones. Shikokus are opportunistic omnivores,
Social structure and culture: They form matriarchal clans that build underwater settlements from coral, shells, and
Reproduction and lifecycle: Reproduction is seasonal, with eggs laid in guarded capsules. Hatchlings display rapid curiosity
In fiction: Shikokus frequently appear as allies or rivals in stories about ocean stewardship and interspecies