The Tu-Sua Ocean Trench on Upolu, Samoa is one of the most incredible swimming spots in the world. ⁠ ⁠ Climb down the ladder and dive into the 30-metre deep pool surrounded by steep cliffs and lush gardens. Experienced divers can even swim through the cave and out to sea. ⁠ ⁠ 📸 Alamy ⁠ ⁠ #samoa #tusua #oceantrench #upolu #sea #paradise #travel #swim #swimmingspots