North of Guam International Airport and Tumon, the snorkeling at Sharks Hole near Taguisson Point is popular for the very healthy coral reef. While snorkeling, you may encounter manta rays, parrotfish and chromis in waters from 5 to 20 feet deep.
Sharks Hole is located off a small beach north of Tanguisson. Keep in mind that there are strong outbound currents.
The best time of day for Sharks Hole snorkeling is slack high tide for the highest visibility.
To reach the Guam snorkeling by air, fly into the Antonio B. Won Pat International Airport (GUM) which is located in the middle of the island. While the dry season is typically January to June, the best snorkeling on Guam is during the months of May through August. The highest water clarity can be found if there is an incoming tide during the morning. While snorkeling in Guam, keep an eye out for green sea turtles, hawksbill turtles and dozens of species of sharks. Overall, there are over 700 species of reef fish and over 300 species of coral on the fringing reefs. Most snorkelers stay within the fringing reef since there is usually a strong current just beyond the reef. There are a couple lesser well-known snorkeling dive sites off the east coast of Guam, which should only be attempted during the local summer months and then only with extreme care.
Overall, Sharks Hole is the 2nd most popular snorkel dive spot of all 17 snorkeling dives in Guam.