The waters off the coast of Onjuku on the eastern side of the Boso Peninsula are famed for spiny lobster or ise-ebi. This festival gives you a chance to eat lots of lobster with lots of of other people.
Along with eat as you go stalls, there are packages for fixed prices. For ¥1,000 you can get 1 lobster. For ¥3,000, you can get 2 lobsters and 2 sazae shellfish. When the lobsters run out, there are no more.
The venue is at the north end of the beach between the lagoon and the Tsukinosabaku Memorial Hall.