Highlights

• Expect a short sea crossing, a landing or swim stop from a catamaran, and rugged volcanic terrain.
• The spring water is cloudy from sulphur and may feel only slightly warmer than the sea.
• Strong currents can make swimming challenging.
• Trails are unpaved and steep in places, with steam vents and sharp lava rock underfoot.
• Guides often limit swim time and point out safety issues.