Question: where is the second largest barrier reef located
Answer: The Belize Barrier Reef is a 300 - kilometer ( 190 mi ) long section of the 900 - kilometer ( 560 mi ) Mesoamerican Barrier Reef System , which is continuous from Cancún on the north - eastern tip of the Yucatán Peninsula through the Riviera Maya and up to Honduras , making it the third largest coral reef system in the world after the Great Barrier Reef in Australia and the New Caledonian barrier reef in New Caledonia .