They go straight to the ocean surface, feed there, grow; some will descend deeper into the ocean where they will dodge jelly fish, sharks, blue whales and hope to survive.
他们直接进入了海洋表层，捕食，生长。有些会在海里下沉更深些，而那里他们可以躲避水母，鲨鱼，蓝鲸，以此求生。
Port Jackson sharks can grow up to 1.6 meters long (5.5 ft) and typically feed on crustaceans, sea urchins, and fish.
来自Port Jackson的鲨鱼最大可以长到1.6米长(5.5英尺)，通常以甲壳类动物，海胆和鱼为食。
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