El Nido’s lagoons are some of the most scenic you’ll find in the Philippines. The Big Lagoon is abundant with marine life all under its serene, turquoise-green waters surrounded by orchid-lined limestone walls. The Small Lagoon or Secret Lagoon is in a more secluded area also lined with limestone walls. See what was once a cave and is now surrounded by towering karst cliffs, leaving a lagoon in the middle.