Dive into this must-see sea trench


To Sua Ocean Trench is on Samoa’s most populous island. Image by Michael

If you’re looking for a spectacular swimming hole this summer, you might do well to check out To Sua Ocean Trench in Samoa. Preternaturally clear, this photogenic sea trench has been dazzling visitors in this lonely corner of Samoa’s most populous island for generations. To Sua enthusiasts used to swim in through the dangerous sea cave that gives the pool its water, but nowadays, a safe and sensible ladder and platform provides easier access. There’s also a dry inland sister trench named To Le Sua just a few yards away. Legend says all the spirits that lived in To Sua up and moved to To Le Sua when the ocean came. Administered by the small nearby village of Lotofaga, To Sua is open seven days a week from 7 a.m. to 6 p.m. Entry is $15 for adults, $6 for kids ages 7 to 15, and free for those under 7. Dive into this must-see sea trench below.

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The name “To Sua” translates to “Big Hole.” Image by Noritoshi Takeuchi

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The sea cave near To Sua leads to the open ocean and should only be navigated by skilled divers. Image by Noritoshi Takeuchi

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Even though To Sua is plenty deep, the water is so clear that the rocky bottom is plainly visible. Image by Noritoshi Takeuchi

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To Sua is open to visitors every day from 7 a.m. to 6 p.m. Image by Noritoshi Takeuchi


The trench’s nearest village, Lotofaga, has just over 1,000 residents. Image by WikiCommons


Before the ladder and platform were installed, visitors used to access To Sua through the sea cave. Image by Dave Lonsdale


Access to To Sua is $15 for adults and $6 for children ages 7 to 15. There’s no fee for children younger than 7. Image by To Sua Giant Swimming Hole