Praslin is another of the main islands of the Seychelles, offering a variety of excellent dive sites. The healthy reefs and granite formations are a great place to see whitetip reef sharks and large stingrays.

The island of Premuda is famous for 'The Cathedral', a spectacular system of interconnected underwater caves. On sunny days, the light filtering through the porous ceiling creates a breathtaking, church-like light show.

The Prickly Pear Cays are a pair of small, uninhabited islands that offer beautiful and very easy diving and snorkeling. The shallow coral gardens are in excellent condition and are teeming with colorful reef fish.

Princess Alice Bank is a submerged seamount far offshore in the Azores, known for one of the ocean's great spectacles: huge aggregations of graceful mobula rays. This is a thrilling blue-water dive for experienced divers.

The Prinz Eugen was a German heavy cruiser that survived WWII and the Bikini Atoll tests, only to capsize later at Kwajalein Atoll. The massive, overturned wreck is a spectacular dive, with its huge propellers and rudder breaking the surface.

The Prony Needle is a truly unique geological formation. It's a massive hydrothermal chimney rising from the deep, formed by mineral deposits from hot water vents. It's a spectacular and otherworldly sight for advanced divers.

Protea Banks is a deep reef system off the coast of KwaZulu-Natal, renowned for its high-adrenaline shark diving. Strong currents attract a variety of shark species depending on the season, including ragged-tooth, bull, and hammerhead sharks.

Providencia is a remote Colombian island with the third-largest barrier reef in the world. The diving here is on pristine, untouched reefs with a huge amount of life, including a very healthy population of reef sharks, all without the crowds.

Puerto Galera offers a huge variety of dive sites, from gentle coral gardens perfect for beginners to thrilling canyon drifts for advanced divers. The area is located within the Coral Triangle, boasting incredible marine biodiversity.

Puget Sound offers incredible and surprisingly rich cold-water diving. The nutrient-rich waters support a huge variety of life, and it's one of the best places in the world to see the giant Pacific octopus, wolf eels, and a stunning diversity of invertebrates.

Pulau Ai is one of the Banda Islands, offering spectacular wall diving. The island is fringed by a healthy reef that drops off into a deep, vertical wall covered in pristine hard corals and sea fans. Turtles are very common along the wall.

Pulau Chebeh offers some of the most dramatic underwater topography at Tioman, with giant granite boulders creating a labyrinth of swim-throughs and canyons. The currents can be strong, attracting blacktip reef sharks and barracuda.

Lang Tengah is a small island located between Redang and Perhentian. It offers very similar diving, with beautiful, easy-to-navigate coral gardens, frequent sightings of blacktip reef sharks in the shallows, and excellent snorkeling opportunities.

Pantar Island, part of the Alor archipelago, is known for its exhilarating current-swept wall dives. The Pantar Strait can have some of the strongest currents in Indonesia, which brings in nutrient-rich water and a huge amount of pelagic life.

Pulau Pisang ('Banana Island') is another stunning site in the Banda Islands. It features a beautiful, deep wall that is completely covered in enormous barrel sponges and vibrant soft corals, attracting large schools of fusiliers and red-toothed triggerfish.

Pulau Rawa is a picturesque private island known for its stunning white sand beaches and easy diving. The shallow, protected reefs are perfect for beginners and snorkelers, with healthy hard coral gardens and plenty of colorful reef fish.

Historically significant for being traded for Manhattan, Pulau Run also offers incredible diving. The reefs are pristine and untouched, featuring beautiful walls and healthy coral gardens with a huge diversity of fish life.

Pulau Seribu ('Thousand Islands') is a chain of islands just north of Jakarta. While the visibility can be variable, it offers the most accessible diving for those in the capital, with numerous small wrecks and decent coral reefs to explore.

Pulau Tiga at Wakatobi is a series of three underwater pinnacles connected by ridges. The topography creates interesting canyons and swim-throughs, and the currents attract large schools of fusiliers and red-toothed triggerfish.

Famous as the setting for the first season of 'Survivor', Pulau Tiga offers more than just volcanic mud baths. The surrounding reefs are healthy and are particularly known for their high population of banded sea kraits (sea snakes) and good macro life.

Pulau Weh, at the northernmost tip of Sumatra, sits at the confluence of the Andaman Sea and the Indian Ocean. This results in strong currents, excellent visibility, and dramatic volcanic underwater landscapes, with a good chance of seeing larger pelagic species.

The Punta Cana area offers a good variety of diving. The main attractions are the large Astron wreck and a beautiful cavern system known as 'The Cave'. The surrounding reefs are also healthy and worth exploring.

Punta Cormorant at Floreana Island offers a beautiful wall dive with a large sandy area at its base. This is a fantastic spot for seeing a variety of rays, including stingrays, eagle rays, and sometimes manta rays.