8Isla Holbox, Mexico

Isla Holbox is a small island off the coast of Mexico’s Yucatan Peninsula, and it’s a hidden gem with remarkably clear waters. The calm, shallow sea around the island is perfect for wading, kayaking, and paddleboarding. The natural beauty of Isla Holbox is preserved, with no cars allowed on the island, creating a peaceful escape. Don’t miss the bioluminescent waters at night, where the sea glows with tiny lights.