However, experienced divers know that the water at Iceland's legendary Silfra Fissure has an unbelievable transparency. It's the only place in the world where you can swim between the tectonic ...

If you're looking to explore the hidden treasures below the surface, underwater cave adventures are as unique as they come ...

An curved arrow pointing right. The Silfra fissure in Iceland is the crack between North America and Europe. It is the only place in the world where you can swim between two tectonic plates.