Allen Pleus, with the Department of fish and Wildlife in Washington State, says that the signal crayfish is an important species in his region.

华盛顿鱼类和野生动物的艾伦·普鲁伊斯说小龙虾在本地是很重要的物种。

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That "created like a cave they could go in and out of, " Pleus said.

CNN: Five fish stow away on tsunami-tossed boat

Finally the boat was towed to a state yard, where the fifth fish came swimming up to Pleus.

CNN: Five fish stow away on tsunami-tossed boat

Pleus said most debris out in the ocean attracts fish, so it's not surprising these fish found a home in the debris.

CNN: Five fish stow away on tsunami-tossed boat