What is the Carribean Sea most known for?

The Caribbean Sea is home to the second-largest barrier reef in the world, the Mesoamerican Barrier Reef, and the largest reef system in the Northern Hemisphere. It runs 620 miles along the coasts of Mexico, Belize, Guatemala, and Honduras.

What is barrier reef?

It is a coral reef running parallel to the shore but separated from it by a channel of deep water.