戸川純　Doomcore蛹化の女

Eusocial animals — whether they’re bees, termites, or marine shrimp — all live in groups, cooperatively take care of the group’s young, have a reproductive division of labor, and have an overlap of generations within the group. The predominant advantage of being eusocial is that it increases the collective’s chances of survival: groups do better against predators. Most evolutionary scientists think eusociality emerged as groups of organisms realized this advantage, and then they continued the practice until they reached a “point of no return” — the hive mind became the only option.