This undersea garden in the Gulf of Mexico is a jaw-dropping collection of coral and home to hundreds of marine species, including whale sharks and manta rays.

While Sipalay is celebrated for its long, white-sand beaches, it is equally renowned for its vibrant marine ecosystem, where some of its most extraordinary residents are also its smallest.

Jules’ Undersea Lodge in Key Largo throws out the traditional hotel playbook entirely, replacing the front desk with a moon pool and the bellhop with your own two fins. Your bedroom window view ...