These two species occur in the intermediate zone between rocks and sandy floors, at depths ranging from 3-20 m (9-60 feet).

这两个品种生活在暗礁和沙砾层的中间地带，大约水深在3—20米(9—60英尺)。

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These two species occur in the intermediate zone between rocks and sandy floors, at depths ranging from 3-20 m (9-60 feet).

这两个品种生活在暗礁和沙砾层的中间地带，大约水深在3—20米(9—60英尺)。

youdao