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There are a lot of different Beetles (350.000 Arten in 179 Familien sind beschrieben) | There are a lot of different Beetles (350.000 Arten in 179 Familien sind beschrieben) | ||
All of them do breath oxygen via Trachea. | |||
Even all the Beetles that live under water need to breath oxygen. | Even all the Beetles that live under water need to breath oxygen. | ||
They have different technics to do that. E.g. taking small oxygen bubbles with them under water. | They have different technics to do that. E.g. taking small oxygen bubbles with them under water. | ||