We did the Sea Trek Helmet dive in St. Maarten. This is by far the coolest thing we have ever done. We have snorkeled many many times before, but this is completely different. It is like walking along the bottom of a 20 foot deep aquarium. The guides on this tour were top notch. Before our trip we purchaed the Go Pro Silver camera. The pictures and video from this excursion are absolutely fantastic. The one guide saw that I had this camera and he spent so much time pointing things out for me that I almost felt like I had a one on one tour with him. Nice bonus to a great day.