Tappizaki is a seasonal beach dive at the northern tip of the Tsugaru Peninsula, where an exposed cape and changing sea state shape the day more than any resort-style schedule. Road access reaches the cape, but the dive itself is best treated as a weather-window site with simple logistics and local guidance. When the sea settles, the point can be lively: logged dives have shown fish schools, seasonal nudibranchs, and enough northern-water life to make repeat visits worthwhile.