Secreted beneath the campus of Piula Methodist Theological College, Piula Cave Pool consists of two blue-green, fish-filled freshwater grottoes side by side, only metres from the sea. The brave can swim between them via a creepy 3m underwater passage, although it’s difficult to find in the darkness at the rear of the caves. The pools are concreted in so it’s not a completely au naturel experience but it is refreshing and the college grounds are beautiful. There are bathrooms and a changing area.