Gazian was a living planet in the Mid Rim's Gazian system. It was covered by the Living Sea, a large, deep growth of mushrooms with hallucinatory spores. The area was strong in the Force.
Between 3 ABY and 4 ABY, Jedi-in-training Luke Skywalker visited the Living Sea of Gazian in search of knowledge of the Jedi. After landing on a platform, Skywalker fell into the mushrooms while attempting to venture out, losing his breathing mask. Inhaling the hallucinogenic spores, he saw an imprint of the planet Ahch-To and spoke to an imprint of the High Republic Era Jedi Master Elzar Mann. After their conversation, Skywalker received a sacred Jedi text from a skeleton of a dead Jedi.