Kamogawa Sea World, on the Pacific coast of the Boso Peninsula in Chiba, is famous across Japan for one animal above all: the orca. It is one of the very few places in the country where killer whales perform, and the sight of them launching out of the water metres from the front rows has made the park a pilgrimage for marine mammal fans for decades.
The orca stadium is the headliner, and the splash zone seats mean exactly what they say, with ponchos a popular purchase. Around it run beluga demonstrations, dolphin performances and sea lion comedy, on a rotating schedule that rewards checking times on arrival and planning your loop around them. Between stadiums, the aquarium buildings cover the life of the surrounding Pacific, with the coastal setting letting several exhibits open straight onto the sea air.
Kamogawa is a genuine excursion from Tokyo, roughly two hours each way, so start early and treat it as a full day. Ocean view restaurants inside let you eat lunch watching the whales, which remains one of the odder and more delightful dining experiences in Kanto.
Take the JR Wakashio limited express from Tokyo Station to Awa-Kamogawa Station, about two hours through the peninsula, then ride the free shuttle bus or walk roughly fifteen minutes to the gates. Drivers can cross the bay via the Aqua Line in around two hours from central Tokyo.



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