Bcause we aren't sure of the causes for starfish population increases, it's difficult to prevent them.(因為我們不確定海星數量增加的原因，所以要預防就很難了。)

Starfish is an amazing animal in the world.(海星是世界上的奇特動物。)

They are just starfish on the beach.(它們只是海灘上的海星而已。)

I was thinking of a starfish or a cat.(我當時在想一個海星或一只貓。)

Periodically, starfish population explodes.(海星的數量會周期性地激增。)

In the oceans, you can find starfish and sea horses. They are interesting and beautiful sea animals.(在海洋中，你能看到海星以及海馬，它們都是很有趣、很美麗的海洋動物。)

The first hypothesis is that low salinity and high temperatures favor the survival of the starfish larvae.(第一個假設是低鹽度和高溫有利于海星幼蟲的存活。)

Now, in small numbers, the starfish don't affect coral reefs dramatically.(現在，海星數量很少，對珊瑚礁的影響也不大。)

The starfish is purple.(這只海星是紫色的。)

The answer is starfish.(正確答案是海星。)