53 Along the Coast-Mid

Along the Coast FOCUS Question How does the ocean change the land along a coast?

海岸沿岸焦点问题海洋如何改变海岸沿岸的土地?

Where Land and Water Meet A coast is the edge of land. It is where land meets the ocean. Another name for that edge is a coastline. Each coastline is different. The land can be steep, flat, rocky, or sandy. Wowser Earth has more than 571,000 kilometers (355,000 mi.) of coastline. That's more than the distance from Earth to the Moon!

海岸是陆地的边缘。 它是陆地与海洋的交汇处。 这条边的另一个名字是海岸线。 每条海岸线都不一样。 这片土地可以是陡峭的、平坦的、多岩石的或多沙的。 地球拥有超过571,000公里(355,000英里)的海岸线。 这比地球到月球的距离还长!

Never the Same Coastlines are always changing. Wind makes waves on the ocean. Waves are very strong and are always moving. They move the sand and rocks on the shore. Waves change a coastline.

永不相同的海岸线总是在变化。 风在海洋上掀起波浪。 海浪非常强烈，而且一直在移动。 他们把沙滩和岩石搬到岸边。 海浪改变了海岸线。

Rocky Coasts In some places. the land at the coastline is very steep. Those coastlines have rocky cliffs. Over time, big waves cause pieces to break off the cliffs. Sometimes the broken cliffs are in the shape of arches or sea stacks. Do You Know? Waves can make holes in rocks. Some seabirds use the holes for nests.

在一些地方的岩石海岸。 海岸线上的土地非常陡峭。 那些海岸线有岩石峭壁。 随着时间的推移，巨浪导致碎片从悬崖上脱落。 有时破碎的悬崖呈拱门或海蚀柱的形状。 你知道吗?海浪能在岩石上打出洞来。 一些海鸟用这些洞筑巢。

Some coastlines don't have cliffs. But the land is still rocky. When the tide comes in, water fills holes between the rocks. When the tide goes out, some water stays behind. These holes full of water are called tide pools.

有些海岸线上没有悬崖。 但这片土地仍然崎岖不平。 涨潮时，水会填满岩石之间的洞。 退潮时，有些水留下来了。 这些充满水的洞叫做潮池。

Life in Tide Pools Many animals live in coastal tide pools. For some animals. the calm water in the tide pools is safer than the open sea. Some pools are home to crabs and sea urchins. Sometimes small fish live in tide pools, too. You might even see an octopus!

潮池中的生活许多动物生活在沿海的潮池中。 对于一些动物。潮池里平静的海水比公海更安全。 一些池塘是螃蟹和海胆的家。 有时小鱼也生活在潮池里。 你甚至可能会看到章鱼!