Aichi Prefecture

Aichi Prefecture in central Honshu offers coastal and inland diving experiences within a mix of urban and rural settings. The coastline along the Philippine Sea provides access to temperate-to-warm waters with modest visibility and typical marine life common to the region's subtropical-influenced waters. Inland, Lake Hinuma offers freshwater diving opportunities with clear water and abundant macro life during seasonal conditions. Diving centers are concentrated around local cities, with Toyota serving as an access hub. Overall, the region is more notable for its urban proximity and inland water options than for iconic offshore sites, making it suitable for weekend and local diving trips rather than destination-style diving.