Grott 1

This dive site, Grotto 1 in Minami Ise, Mie, is famously known as 'Ise-Shima’s Blue Cave.' Divers explore a captivating cavern where natural light pierces through, creating a stunning blue illumination. The site also features occasional stalactites within the grotto. Navigation typically involves exploring the grotto's interior and then venturing out to the surrounding roots, although the maximum recreational dive depth here is 17m. No specific history or story is provided beyond its local moniker. The marine life here is diverse and abundant. Inside the grotto, schools of tuna are a common sight, alongside blacktip reef fish and Japanese snook. Outside, around the surrounding roots (which extend beyond 25m), divers can spot snappers, rock lobsters, frogfish, and various nudibranchs. Other notable species include Dall’s shark, kuei, sparrowhawk, and frigatefish, indicating a rich mix of pelagic and benthic life. The highlight of Grotto 1 is undoubtedly the dramatic light show within the 'Blue Cave' and the vibrant schools of tuna. While no specific best time to visit is mentioned, grotto dives are generally best enjoyed on sunny days to maximize the light penetration. For divers, exploring the roots offers additional macro and reef life. Freedivers and snorkelers can also enjoy the shallow parts of the grotto and the light effects from the surface due to the accessible average depth.