Upolu is one of the main and most populated islands of Samoa in the South Pacific Ocean. A swim in the To Sua Trench will be the highlight of your trip. The To Sua trench is a 30-meter deep swimming hole surrounded by lush greenery. The climb down to the water is an adventure in itself. The swimming hole is fed through ocean tides through underground lava tubes. The trench offers the best experience during high tides in the ocean. If you do not want to go down the ladder then sit by the beach hut and enjoy the cliff-top view of the ocean. Waterfalls are dime a dozen in Upolu. The Papapapaitai falls, Fuipisia falls, Sopoaga falls are some of the most popular ones. Relax on the Lalomanu beach and enjoy the crystal clear water and white sand beach. The beach teems with marine wildlife. It's the perfect place for a picnic and to watch the sunset over the turquoise waters.