Tunnels Beach

Tunnels Beach is a dive site on the North Shore of Kauai, Hawaii, known for an intricate network of lava tubes, caverns, and arch formations that shape its underwater landscape. These features were created by volcanic lava flows, and together they form a dramatic, complex environment beneath the surface.

The reef's lava tubes and caverns create a varied terrain suited to divers comfortable navigating enclosed and semi-enclosed spaces. The best area for entering the water is directly in the center of the beach, where the reef's most striking formations and coral are found. The bottom includes sand alongside the reef structure.

Marine life at Tunnels Beach includes parrotfish, eels, and occasional manta rays, with seagrass also present in the area. The diversity of the site's cavern and tube network provides shelter for a range of species.