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Finding Nemo s role 尼莫的新角色 Clownfish help their anemones breathe 小丑鱼助力海葵呼吸 IT IS one of the best-known relationships in nature: the anemone provides atentacle-guarded home and the clownfish drives off predators that would chew itsprotector. 这是自然界中一个最广为人知的关系：海葵为小丑鱼提供触须拱卫的家园，小丑鱼则会驱赶会把海葵吃掉的掠食者。 Recent research has, however, shown there is much more going on. 然而最近的研究显示小丑鱼做的要比这多得多。 A study in 2009 revealed that waste excretedby clownfish provides vital nutrients to anemones. 2009年的一项研究显示，小丑鱼的排泄物是海葵极其重要的营养物。 Now researchers have found clownfish can boost their hosts oxygen supplies at night too. 研究人员现在又发现小丑鱼还可以在夜间为其宿主增加供氧量。 Clownfish and anemones live on coral reefs where oxygen levels in the water often plunge atnight as photosynthesis shuts down. 小丑鱼和海葵生活在珊瑚礁中，由于夜间不再有光合作用，海水在夜间的氧气含量常会骤然下降。 | 
