The deaths are a blow to the tourism industry in Zanzibar, where thousands of visitors go to watch and swim with wild dolphins.

• 报道说，大量海豚的死亡对桑给巴尔的旅游业是一个巨大的打击。每年，都有众多游客前往桑给巴尔，观看美丽的海景并和野生海豚一起在海中畅游。