If you want to go to the undersea temple, you need to prepare night vision potion. It is recommended to prepare about three bottles, preferably five bottles. In addition, you need to prepare a set of equipment, a set of logs, enough food and a bed. Just press F3 for the PC version, and then check the information of Biome. If it shows deep sea, it means that you have reached the deep sea area.

Need to know:

Players can only be active on the seabed for a long time by drinking deep-sea potions. Find a flat seabed and rush out of the foundation. After the ground is paved, erect a fence around the foundation to form a well, so that the well can cross the sea.

Use a square replicator to replicate the carpet and spread it all over the well. After being covered, the carpet will absorb water and suck up the water in the whole well. When the water in the well is sucked dry, it can be like building a house on land.