"Coral at the bottom of the sea" can refer to different points depending on what interests you. Here are some possibilities:


1.    Deep Sea Corals: These fascinating creatures live on the seabed, often at deeper depths than where sunlight penetrates. Unlike the shallow water cousins, they do not rely on sunlight for energy. Instead, they capture small food particles from the current passing through them. Deep sea corals have amazing shapes and colors, creating a wonderful underwater garden in the cold, dark sea.


2.       Corals that live on the seabed in shallow water: Some types of corals grow on the seabed, even in shallow water. These corals can find stable conditions or protection from predators on the seabed compared to higher reefs.