For traveling divers, the Yucatan is the gateway to Cozumel, Isla Mujeres, the Riviera Maya, and little known Holbox island. Its easiest to fly to Cancun, pick up a rental car, and explore. Two of the best Mayan archeological sites in the world are located in this area: Chitzen Itza and Uxmal. These should be considered no-miss destinations when traveling here.

Merida, in the northwest part of the state, is the capital and the largest city on the Yucatan peninsula. It’s a beautiful colonial city with a rich history and culture. We enjoyed the central market while shopping for handicrafts and eating at the food stalls.

At the north end of the peninsula, is the city of Chiquila where you can take a ferry to Holbox island. The main reason to come here is to swim with whale sharks. It is in the migration path and your chances of seeing the world's largest fish are excellent. This is a natural paradise with giant flocks of flamingos, an island that serves as a bird sanctuary, and a small island with a natural freshwater spring in the middle, which forms a pool for swimming. We saw whale sharks, breaching mantas, and thousands of migrating golden rays. It’s a very small island with golf carts used as the primary form of transportation. We stayed in a beautiful small boutique hotel near town and walked everywhere. If you’re able to visit here, it should also be considered a no-miss. We have traveled here many times and never get tired of this wonderful destination.

I've visited the Riviera Maya many times. We've always based ourselves in Playa del Carmen and ventured out from there. Playa del Carmen is an easy drive from Cancun and a rental car is essential. Each time, we have rented a beachfront private villa within walking distance of town. Fifth Avenue is the main street in town and is pedestrian only. This is where you will find a great number of restaurants, bars, and shops. Many dive shops are scattered around town. This is the main embarkation point for the ferry to Cozumel.

The main reason divers come to this area is to dive in the cenotes. These are ancient limestone caves, now filled with water, and making up the largest underwater cave system in the world. You can dive the cenotes without special training because they are considered cavern dives where you never lose sight of the entrance. Any further exploration requires cave diving training. The dive shops in Playa del Carmen will all arrange guided cenote dives led by certified cave divers. Some will also arrange high-speed boats to Cozumel for a two tank dive on the world-famous walls.

As you continue south of Playa del Carmen, you'll come to the town of Puerto Aventuras, Tulum, and Akumal. Cenotes are scattered throughout this entire area. Akumal has a wonderful, calm bay perfect for snorkeling and is usually occupied by a large number of sea turtles, including green, hawksbill, and loggerheads. There is also a beautiful white sand beach. Tulum has an ancient Mayan archeological site that’s quite extensive and certainly worth a visit. Coba, another Mayan site, is only a short drive from Tulum and is also an excellent side trip. Some of my favorite cenotes are Dos Ojos, Angelita, Dream Gate, and Gran Cenote.

Bottom line: The Riviera Maya & Yucatan are an outstanding area to experience world-class diving, fantastic Mayan ruins and cultural sites, incredible nature sites, and large marine animals, cenote diving, authentic Mexican food, beautiful beaches and a welcoming and warm local population. It's family-friendly, with plenty of things to do for both adults and children.

I traveled to Indonesia for an eleven-day liveaboard trip to northern Raja Ampat. After several flights and layovers, totaling about 30 hours, I arrived in Sorong, the embarkation point for the trip. Sorong is a bustling city, far larger than I expected. I was met at the airport by boat staff and was taken to the harbor for a short tender ride to the liveaboard, which was anchored nearby. After getting settled in my stateroom and preparing my gear for diving the next morning, we had dinner and turned in for the night, with high expectations for the next day.

The boat sailed at night and we woke up at our first stop. As is customary, all of the diving was done from tenders. Each day three dives were offered along with a night dive. On this boat, a complimentary neck and shoulder massage were offered after every dive. No one ever passed on this wonderful perk. The boat was moved every night to a new dive location.

As the trip progressed, we made our way west and north, until we crossed the equator and dove the Equator Islands. We dove a large variety of sites, including reefs, walls, and jetties. At several sites, the current was very strong, requiring a reef hook to stay in place and watch the show. The current attracts large schools of fish, and we were never disappointed. We saw large congregations of schooling Barracuda, Jack’s, Sweetlips, and many others. The biodiversity in this area is second to none. We also saw mantas, seahorses, cuttlefish, squid, many different species of nudibranchs, Leaf Scorpionfish, Mantis Shrimp, turtles, Napoleon Wrasse, and Bumphead Parrotfish. Shark sightings included Blacktip, Whitetip, Grey Reef, Zebra, Nurse, Wobbegong, and Epaulets. Night dives were always in shallow water at muck sites. The dive guides had an uncanny ability to locate pygmy (pontohi) seahorses and we saw quite a few. During these dives, Coconut Octopuses and Dragonettes were common. We were also able to find Blue Ringed Octopuses and Flamboyant Cuttlefish. Needless to say, I checked a large number of fish and other critters off my bucket list.

The topside views in Raja Ampat are spectacular, including lush islands populated by birds and bats, and awesome sunsets. We did an off-boat excursion at Pianemo Island, where you make an easy climb of about 250 wooden steps to reach viewing platforms, which give you a breathtaking view for miles around.

Bottom line: Raja Ampat is a wild, remote area which is largely unexplored. The biodiversity is incredible, with a large concentration of fish and corals of every variety. This is truly the Holy Grail of diving!