Bathe at a Bioluminescent Beach in Mexico

Swimming in a glowing sea seems like something out of a sci-fi flick. However, the brilliantly bioluminescent beaches along Mexico’s Caribbean coast in Holbox are very real. Plankton light up these waters, most notably on moonless nights during summer through fall. Reserve a room at the oceanfront Las Nubes de Holbox for direct access to the glow. As a bonus, the hotel uses solar power and a rainwater harvesting system; they’re also committed to protecting pink flamingos, a formerly endangered local species.