The Eye of the Sea is a mystic gem, with great power that can be used in different ways. It was discovered on the island of Saint Lucia. It was believed to be the first jewel of the Corona Aurora. Brownbeard had spent his entire life searching for this jewel. He enlisted help from the Rangers when they arrived to St. Lucia with the map. Miratrix stole the Eye of the Sea from the Rangers. Miratrix used the Eye to transform her monster into a heavy machinery monster. The Rangers traded the Eye to Brownbeard for his Lucky Pearl, also known as the first jewel of the Corona Aurora.