Sea turtles of Costa Rica represent one of the most extraordinary ecological treasures in the country, drawing wildlife enthusiasts to protected beaches where ancient nesting rituals unfold under the moonlight. Leatherbacks, green turtles, hawksbills, and olive ridleys each choose specific coastlines and seasons, creating diverse opportunities for travelers to witness their nesting cycles. Guided tours take place at night because mother turtles rely on darkness, cool sand, and low disturbance to safely nest, offering visitors powerful and intimate encounters with wildlife. In locations like Ostional and Nancite, travelers may witness arribadas, dramatic mass nesting events where tens of thousands of olive ridley turtles come ashore within days, creating one of the most concentrated sea turtle spectacles on earth. Naturalist guides help visitors understand lifecycle stages, threats from predators and ocean pollution, and conservation measures that protect nests from poachers and environmental damage. Many tours contribute directly to scientific monitoring efforts, allowing guests to observe data collection, tagging, and responsible research practices that support long-term survival. Turtle habitats often overlap with tropical birds, crocodiles, monkeys, and coastal ecosystems, making the experience a full immersion into Costa Rica’s biodiversity. Some regions also offer hatchling release programs, giving travelers the emotional experience of helping baby turtles make their first journey into the ocean. Conservation-focused operators follow strict guidelines to ensure minimal disturbance, including limited lighting, quiet movement, and controlled group sizes. Witnessing sea turtles in Costa Rica provides a profound connection to nature and a deeper appreciation for global marine conservation.