两石分别刻有“天涯”和“海角”字样，意为天之边缘，海之尽头。
Two stones inscribe "the horizon" separately and "the cape" the inscription, Italy edge of for the day, the sea terminus.
海笋，穿石贝海笋科中的一种海类甲壳软体动物，有长的甲壳，可以借之伸入到木头、岩石和泥土中，常引起对码头堆放物的破坏。
A Marine bivalve mollusk of the family Pholadidae, having a long shell with which it bores into wood, rock, and clay, often causing destruction of wharf pilings.
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