The dunes are a primary nesting site for the endangered loggerhead sea turtle (Caretta caretta) in Japan.
Strong, dry winter winds known as 'Enshu no Karakaze' are responsible for the constant transformation of the dune formations.
The sand dunes act as a natural barrier, though they have undergone significant erosion and coastal modification over the decades.
Local volunteer groups and city officials regularly patrol the beach during nesting season to protect turtle nests from predators and human interference.
The area is one of the few places in Japan where wind ripples (saimon) can be viewed on such a large, unobstructed scale.
Nakatajima Sand Dunes form one of Japan's three largest sand dune systems, stretching approximately 4 kilometers along the Enshu Sea coastline in Hamamatsu. The site is a protected nesting ground for endangered loggerhead sea turtles, which arrive annually between May and August to lay eggs. During the nesting season, the beach is cordoned off at night to ensure the safety of the turtles and their hatchlings. The dunes are characterized by 'wind ripples' formed on the sand surface by strong coastal breezes known as Enshu no Karakaze. While the area is popular for coastal scenery and walking, swimming is strictly prohibited due to strong rip currents and steep underwater drop-offs. The dunes are located within the Enshunada Coastal Park system. Visitors can observe the vast, shifting landscape that transitions from sandy mounds to a wide, debris-strewn shoreline. The site remains a significant natural landmark maintained by the Hamamatsu City government.
The crest of the highest dune looking toward the ocean, especially when wind ripples are visible in the morning light.
Wear footwear that can handle deep, loose sand as walking can be physically demanding.
Do not attempt to swim, as the currents are extremely dangerous and local signage explicitly prohibits water entry.
Check the local city environmental updates if visiting in summer to see if turtle release events or restrictions are active.
Attempting to swim in the ocean; leaving belongings unattended in the wind; walking on the dunes during high-wind alerts.
No public closures, but beach access is restricted at night during the loggerhead turtle nesting season (May-August).
Stay on marked paths during sea turtle nesting season and never disturb nests or hatchlings; do not leave any trash.
