Scuba diving and snorkelling, for beginners and experts alike, is the reason why Puerto Rico is often called the Caribbean's best-kept underwater secret. Off the southwest coast, from the village of La Parguera to the city of Ponce, lie some of the island's most extraordinary dive sites, including the Black Wall, home of the Caribbean's rarely seen black coral. Another noteworthy spot is Isla Mona, off the west coast of Puerto Rico, known as the Galapagos of the Caribbean. It is home to sea turtles, dolphins and various species of rare marine life. Scuba Diving Magazine readers regularly vote Puerto Rico as one of the top five destinations for shore diving, and the island is a mainstay in top-20 lists for overall diving. For visitors looking to get close to the water, but not necessarily submerged in it, Puerto Rico offers various other water sports such as world-class surfing, windsurfing, sailing, kayaking and deep-sea fishing.