The Caribbean Sea is a sea in the Western Hemisphere, a sectional of the Atlantic Ocean.
Percy Jackson dreams of Rachel Elizabeth Dare walking along the coast of St. Thomas, a part of the United States Virgin Islands, and looking out at the Caribbean.
After defeating Ah-Puch, Zane Obispo and his family and friends are relocated to Isla Holbox and he and Rosie play in the sea soon after.
When chasing a messenger bird sent by Jazz, Zane and Brooks watch as the coconut containing their message falls into the water.
- The sea is named after the Carib people, one of the indigenous inhabitants of the region.