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海星可以養，但需要大量的成本和時間。首先你需要每天換新鮮的海水，並且是無污染的深層海水，第二你需要給海星充足的氧氣，另外海星吃腐食，臭魚爛蝦都可以，不過不能餵食過多，因為海星吃不完的腐食容易壞水，也就是容易消耗水裡的氧氣，建議沒必要養。