Fish are not everywhere in the sea.
The places where fish live are limited to part of the sand area and a small area around obstacles.
In addition, due to changes in the environment and spawning behavior, they may move to a new location.

■Sand area

Just as it is difficult for people to live in the middle of the desert, it is difficult for fish to to live in sand area.
There is no place for fish to hide to protect itself from foreign enemies.

Most fish that live in sand change their body color to the color of the sand where they live, or are in the sand to hide from their enemies.

Flat sand is a place where feed like plankton is hard to collect for fish.

Fish live in such steep sands and sand mountains because the tidal current tends to collect food.

■Around obstacles such as rocks, coral reefs, and artificial reefs

Due to changes in the tidal current, food such as plankton easily gathers, and there are many hiding places for fish to protect themselves from foreign enemies, they are very good places to live.

As many of the fish that live in sands also live in sands around obstacles, they are suitable as diving points.

The place where feed easily gathers always changes due to changes in the tidal current, so the place where fish gather also changes.

The tidal side of the obstruction is a place where vortices of the tidal current are created, so it is easy to is accumulated feed such as plankton.