Under the sea off the Tango Peninsula, there lies an undulating seabed that steeply sinks 200 meters below the sea surface at a point only 15 km off the coastline. This sea area is an excellent fishing area for snow crabs. The Taiza Inlet is a natural harbor formed by a complex erosion of rocks; Taiza thus developed as a fishing port. The port once prospered as an important junction port on the Kitamaebune―a shipping route to and from the north of Japan. You can still find the remains of bollards for mooring ships in and around the Shiroshima area. There is a legend about the origin of the name “Taiza.” The legend says that Empress Hashiudo (間人), the mother of Shotoku Taishi, stayed in this area. It is said that, when the empress left the area, she gave it her own name, Hashiudo. However, the people in the area were too humble to call their land by the name of the empress, so they began to call the area “Taiza” (meaning “leaving”) instead.
（1）Nochigahama Beach
The beach has pink or reddish-colored sand. The sand washed down from the upstream is derived from granite rocks and contains a high content of a pink mineral called potash feldspar. This mineral makes the sand reddish in color. The sea water is very clear and suitable for sea bathing.
（2）Shiroshima
A castle once stood on this small islet (4 km in circumference; highest point: 21 meters above sea level). This is why the islet is called Shiroshima―literally “castle island.” Today, the islet is used as a nature park. You can observe coastal terraces and potholes on the northern side of the islet. You can also observe the “domes,” a geological phenomenon of raised strata in various places on the islet.
（3）Taiza Fishing Port
Taiza Port developed along the deeply-indented coastline. Fishermen from this port catch crabs in the sea off Kyogamisaki, and bring them to the port on the same day. This is why these crabs are so fresh and known as "Taiza Crabs." * Contact the Fishery Association to see the crab fishing.
（4）Taiza Port Festival (July)
All the ships in the port light up, the streets bustle with rows of night stalls, and fireworks light the sky. This is a fishermen’s festival to pray for safety on the sea. Now this festival is open to visitors as a sightseeing event.
