The Crevice are known for their water clarity. At a few sites fish feeding has become a practice and swarms of tiny tropicals greet the divers. On Guam s deep reefs, look for the wilder side with sea turtles, dogtooth tuna and eagle rays commonly seen. The Apra Harbor is usually well-protected from weather elements, so even if the outer reefs can t be reached, many harbor dives are available. The harbor dives are all on hard coral reefs or shipwrecks and offer vast marine variety.
Invertebrate life is especially diverse in the harbor.
The outer reefs provide a variety from deep dropoffs to coral heads and sandy flats of garden eels. They are homes to a wide variety of fish, sea anemones and hard and soft corals. Those used to organized diving will feel at home on the Guam tourist boats as divemasters are present and groups are usually kept to 4 to 6 per divemaster. Guam diving can easily become a cross-cultural experience as divers from many countries come to see the reefs. Instruction at all levels from introductory dives through master scuba instructor can be found here, with many useful specialties easily obtained during an island stay.