Swim In The To-Sua Ocean Trench
Still to do
What it is
To Sua Ocean Trench is a 30-metre-deep swimming hole connected to the sea by underwater tunnels.
How to do it
It's on Upolu's south coast. Climb down a long wooden ladder to the platform and swim.
Top tip
Go at low tide when the current is weaker.
Why it’s on my list
Not done yet. If you’ve done it and have tips, tell me about it.