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This strange creature is a sea cucumber.
這個奇特動物是海參
It uses its tentacles to grab food from the sediment.
它用觸手 從沉積物里抓取細小食物
There are hunters here too, like these nudibranchs, or sea slugs.
這里也有掠食動物 例如這些海蛞蝓
Their vibrant colours are a warning that they're toxic.
鮮艷體色是用來 警告眾人它們有毒
There are over 3,000 species, many hunt just one specific prey.
海蛞蝓有三千多個品種 許多專門獵捕一種獵物
Some hunt each other.
有些則是獵食彼此
This emperor shrimp makes the most of the poisonous nature of its host.
這只帝王蝦 善加利用它的宿主的有毒特性
But, it's a rather one-sided affair.
但它的宿主并沒有好處
As it feeds, the shrimp gets protection and a free ride.
在宿主進食時 這只蝦子有人保護，還能搭便車
Other shrimps have developed a more balanced relationship.
其他蝦子發展出較平衡的關系
Some even solicit for partners.
有些甚至還征求搭檔
These dance for their dinner.
這些蝦子在為晚餐起舞
And these advertise to passers-by that they are open for business.
這些則在向路人宣傳 它們已經開張做生意
They are a parasite removal team,
它們是除寄生蟲小組
providing a service for countless fish on the reef,
為珊瑚礁的大批魚群提供服務
including those that could happily eat them.
包括可以一口吃下它們的魚
