They dive deep, exploring underwater caves and trenches.
Meaning: The sentence describes the crew's exploration of underwater caves and trenches in the deep ocean.
Choice of Words: To dive means to go underwater, usually headfirst. Deep means far below the surface. Exploring means to search and learn about a new place. Underwater means beneath the surface of the water. Caves are hollow areas in the side of a cliff or underground. Trenches are long, narrow, and deep valleys in the ocean floor.
Alternative Expressions
Related Expressions