Cetuses are massive, whale-like, marine creatures that typically live far beneath the surface of the sea or far out beyond the sight of land and are therefore only very rarely seen by people. Sometimes, one will become dormant, or even die, and float upon the surface of the water for so long that it becomes covered with sand, flotsam and jetsom, and even vegetation, and either drift or become lodged on reefs. Cetuses that are somehow identified in this condition are typically referred to as "Island Fish," and those that are asleep are sometimes awoken by the activities of the people exploring them (e.g., by those who start bonfires).