Haloa japonica, common name the Japanese bubble snail, is a species of sea snail or bubble snail, a marine opisthobranch gastropod mollusc in the family Haminoeidae, one of the families of bubble snails.

The species is found in the Pacific Ocean, Mediterranean and North Sea: Their shells have length around 11 mm and width around 8 mm.

[5] The parasites of Haloa japonica include an avian schistosome, which has been implicated in human cercarial dermatitis in San Francisco Bay, California.

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