Coral caverns host an extraordinary diversity of marine life, serving as critical habitats for species that depend on sheltered environments. Common residents include moray eels, lobsters, and various species of groupers and snappers that use the caverns as daytime resting spots and nighttime hunting grounds. Crustaceans like cleaner shrimp, banded coral shrimp, and various crab species thrive in these protected spaces.
The walls and ceilings of coral caverns are often covered with filter-feeding organisms including sponges, tunicates, and soft corals that flourish in the low-light, current-rich environment. Nudibranchs, flatworms, and tiny invertebrates populate the nooks and crannies. Many fish species use coral caverns as nurseries β juveniles shelter in the protected interior until they are large enough to venture onto the open reef. At night, the caverns come alive as nocturnal species emerge to feed, including soldierfish, squirrelfish, and cardinal fish.