洋底

例句：

1. 1. The ship sank to the bottom of the ocean.
   船沉到了海底。
2. 2. The explorer found a new species of fish at the bottom of the sea.
   探险家在海里发现了一种新的鱼种。
3. 3. The submersible dived deep into the ocean's bottom, exploring the mysterious underwater world.
   潜水器潜入了海洋深处，探索了这个神秘的水下世界。