Ocean monuments hold guardians, elder guardians and eight blocks of gold, and they are the foundation of a guardian XP farm. The map plots them across the deep oceans so you can plan the build before you swim.

• Elder guardians inflict Mining Fatigue — bring milk, or clear all three before you start draining anything.
• A monument near a mainland coast is far easier to farm than one in open deep ocean, so compare a few before committing.