Artists set Lake Merritt terrarium project afloat

Terrarium prototype

An aquarium, everyone knows, is a glass case that holds fish. A terrarium is the same thing without the water, so it holds plants, along with the occasional lizard or tarantula. What, then, might be found inside an eight-foot, 3,000-pound sphere called the Wonderarium? Two Oakland artists are trying to decide—and when they do, they want to put it in the middle of Lake Merritt.

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