Safe Zones are fields of energy emitted by Light Crystals, Beacons, and other sources. They offer protection from Dark Aether's toxic atmosphere and slowly replenish Samus's energy. Safe Zones emitted by Crystals and Beacons can be manipulated by light and dark energy.
Safe Zones are usually spherical and intersect with the floor, creating a dome of protection, though they can also be cylindrical. They are emitted by Light Crystals and Light Beacons, but also surround Portal Generatorss, Liftvine Crystals, platforms, and certain upgrades, like the Dark Suit. They were originally created by the Luminoth in their efforts against the Ing during the war and placed strategically throughout Dark Aether.
Safe Zones emitted by Crystals and Beacons can be manipulated using the Light, Dark, and Annihilator Beams. A Crystal or Beacon charged with light energy becomes Energized and does damage to any dark creature that comes in contact with it. Crystals or Beacons hit with dark energy become Nullified and temporarily cease to emit a Safe Zone. A mixture of light and dark energy, however, will Super Charge the Safe Zone, creating a potent light field that lures in enemies with its dark energy.
Some battles are greatly effected by the vulnerability or absence of Safe Zones; for example, the Dark Amorbis with frequently nullify the Light Crystals in the Dark Agon Temple to hinder Samus's progress, and there are no Safe Zones during the battle with the Boost Guardian, significantly increasing its difficulty.
- "We developed Crystals that brought the Light of Aether to the dark world. Using these Crystals allowed our warriors to explore the enemy lands, to bring war to the Ing. Sadly, the Crystals were not enough. We needed stronger weapons, better armor. We withdrew from Dark Aether while our greatest minds devised new engines of war." —Luminoth Lore "Our War Begins" (Metroid Prime 2: Echoes)
- "Energized Crystals provide better protection from Dark Aether's denizens. Dark creatures are damaged or killed by the energized field. Some are killed on contact. The extra protection is not unlimited, and must be recharged by the Light Beam to remain in effect." —Metroid Prime 2: Echoes Logbook "Energized Crystal" (Metroid Prime 2: Echoes)
- "Light Crystals, when covered with dark energy, cease to function for a short time. Light energy can clear the Crystal of the dark energy. Some dark creatures will fire dark energy at Light Crystals to hinder or damage their opponents." —Metroid Prime 2: Echoes Logbook "Nullified Crystal" (Metroid Prime 2: Echoes)
- "When charged with light and dark energy at once, the Crystal becomes a beacon to the Ing. They are compelled to approach it, despite the deadly field of energy it emits." —Metroid Prime 2: Echoes Logbook "Super Crystal (Metroid Prime 2: Echoes)