Grotto

This natural sinkhole is connected to the ocean by three subterranean tunnels, making it one of the world's best cavern diving locations. The Grotto is a must-see location for travelers and residents alike because of its unforgettable blue colors. Many visitors consider this to be one of the Best Diving Sites in Northern Mariana Islands (USA).

The Grotto is Saipan's most well-known attraction, and as such, its environment must be preserved and cherished. You must remove whatever you bring inside the Grotto. The powerful currents can be highly dangerous, so proceed with caution. The Grotto, a collapsed limestone cavern with spectacular light beams that pierce through breaches in the cavern walls, is Saipan's most popular dive spot.

It is also frequently rated one of the world's top diving sites and an underwater photographer's dream dive destination. The walls are covered in coral and macro marine life, and entry is by land after climbing 112 steps into the top of the cavern. Divers frequently spot turtles, schools of barracuda, and other fish near the three undersea entrances to the open ocean.