This reef is a great place to explore by snorkel or scuba. The “Bomb Holes” are not holes created by aerial bombs as is commnly thought, but instead are natural limestone reef formations formed millions of years ago.
The depressions in the inner reef are home to thousands of fish and corals. The Fisheye Marine Observatory is built in the middle of the largest hole, but there are many shallow "pools" along the way to explore with a snorkel.
If you are diving, park in the lot directly in front of the beach and walk or snorkel approximately 75 yards out opn the right side of the walkway, as it is quite shallow, depending on the tide. The sand bottomed main “bomb hole” has several large boulders around which fish swarm. The fish are fed by the marine park staff, and are plentiful and quite used to humans. The feeding is done on the south side of teh tower.
Typically seen here are schools of small reef fish, needlefish, an occasional barracuda, butterflyfish,nudibranchs and more. This area is designated as one of Guam's Fish Preserves.
CAUTION: This is a very good night dive but make sure to bring someone along to stay with your car.
Feather Duster (Fan) Worms are colorful inhabitants of coral reefs and are marine segmented worms that are sessile, attached to rocks or sand by their base.
They are incredibly sensitive to light and water movement. They are plankton-feeders and retract into a tubular home in the coral These worms burrow into coral and extend long tentacles to catch food. When threatened, they disappear into their shafts.