I'd love to travel to a place that has a good cave-swimming adventure.* I'd like it to be:
- Suitable for an amateur
- Good for photography is a bonus
- I'd love it if it's a cave that's connected to the ocean.
- Anywhere in the world is fine, as long as it is generally accessible to a normal tourist (no intense mountaineering training needed, etc.)
What are my options?
* My sister mentioned a friend took her to such a place in Hawaii, but even knowing that I have no idea how I'd find the specifics.