Apo Reef two lagoon systems, the north and south lagoons which are bounded by narrow reef platforms. It is a almost triangular northern and southern atoll-like reefs separated by a deep channel that is open to the west. The channel runs east to west from deep with a fine white sand bottom, numerous mounds and patches of branching corals under the deep blue water. The north lagoon is an enclosed triangular coral reef platform partly exposed during low tide. It is relatively shallow with depths of about . While the south lagoon is an inverted triangular coral platform enclosed on two sides
Coral World Ocean Park Coral World Ocean Park Coral World is a marine park and tourist attraction located next to Coki Beach on the East End of St. Thomas, U.S. Virgin Islands. Since its opening in 1978, the park has featured a signature Underwater Observatory Tower. The tower descends 20 feet in the ocean to allow underwater viewing. Later additions to the park include an 80,0000 gallon circular Caribbean Reef Encounter tank, which houses local fish and other sea life, and an enclosure for South American sea lions. The park uses an open-water system to circulate ocean water through the exhibits. Other park animals