Te Whanganui-A-Hei (Cathedral Cove) Marine Reserve is on the Coromandel Peninsula in New Zealand covering an area of 840 hectares. Cathedral Cove is named after the cave located there, linking Mare's Leg Cove to Cathedral Cove
sea cave, Malta - Sea caves or the Blue Grotto are located on the island of Filfla in Malta. These caves are popular for their beauty and their location when combined with the sunrise, leads to beautiful shades of blue in the water.
Jacob's Well -- Wimberly, Tx: One of the most significant natural geologic treasures in the Texas Hill Country. It is one of the longest underwater caves in Texas and an artesian spring. Jacob’s Well surges up thousands of gallons of water per minute.
Valley of Ten Peaks, Canada. This beautiful creation of nature is located in the Banff National Park in Alberta, Canada. As the name suggests, this valley consists of ten peaks and Moraine Lake flowing at their feet.