Hakkeijima Sea Paradise is an entire island of aquariums and rides in Yokohama’s south: four separate aquarium facilities, a surge coaster out over the sea, and shows in a stadium that mixes belugas, dolphins and sea lions. It is the biggest full-day marine park in the Tokyo region.
The island itself is free to enter; you pay per facility or grab the aquarium-all pass or the full One Day Pass with rides. For most first visits the aquarium pass is the value pick, adding ride tickets only if the coaster crowd in your party demands it.
Hakkeijima Station on the Seaside Line, reached from Yokohama via the JR Negishi Line to Shin-Sugita, about 40 minutes all up. From central Tokyo allow 75 to 90 minutes.
How long? A full day if you do shows plus facilities.
Best show? The main stadium performance; grab seats 20 minutes early on weekends.



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