Sea Walker - Đi bộ đáy biển

Underwater sea walking off the south coast, run by Namaste from the Nautilus boat — you wear a weighted helmet fed with air from the surface and walk along the seabed among fish and coral, no diving experience needed. It suits non-swimmers and anyone who wants the reef without the scuba course, and there's usually a guide with you the whole time plus photos and video. Packages range from a quick dip to a fuller trip with hotel pick-up, so the price swings a fair bit. Book ahead, and note there are health restrictions — it's not for everyone with ear or heart problems.

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