Uvita Beach, located within Marino Ballena National Park in Costa Rica, is renowned for its unique 'Whale's Tail' sandbar, best explored at low tide. The park is easily accessible by car, with well-marked entrances and parking. While exploring the beach and sandbar can be done solo, guided tours are highly recommended for activities like whale watching (best from July-October and December-April) and snorkeling to enhance the experience and spot diverse marine life. Seasonal restrictions primarily concern whale migration periods and the rainy season (May-November) which can bring afternoon showers but lush landscapes. Expect an approximate cost of $6-10 USD for park entry, with whale watching tours typically ranging from $70-100+ USD. A typical visit to the beach and sandbar might last a few hours, while a full whale watching tour is usually 3-4 hours; many visitors spend 2-4 days in the Uvita area to enjoy the park and surrounding attractions. Remember to check tide charts for the Whale's Tail, bring sun protection, and consider water shoes.