They swim in the ocean.

Meaning: This sentence describes people moving through water in a large body of salt water.

Choice of Words: Swim means to move through water using one's arms and legs. In indicates the location or medium of the action. Ocean refers to the vast body of salt water that covers most of the Earth's surface.

Alternative Expressions

The fish swim in the Pacific Ocean.

Meaning: This sentence describes a specific group of fish who are swimming in the Pacific Ocean. It means they are moving through the water using their bodies and are located within the Pacific Ocean.

Choice of Words: The refers to a specific group of fish. Fish are aquatic animals that live in water. Swim means to move through water using your body. In indicates a location within something. The refers to a specific ocean. Pacific Ocean is a specific body of salt water.

The dolphins are swimming in the Atlantic Ocean.

Meaning: This sentence describes a specific group of dolphins who are currently swimming in the Atlantic Ocean. It means they are moving through the water using their bodies and are located within the Atlantic Ocean.

Choice of Words: The refers to a specific group of dolphins. Dolphins are aquatic mammals that live in water. Are swimming means they are currently moving through water using their bodies. In indicates a location within something. The refers to a specific ocean. Atlantic Ocean is a specific body of salt water.

Related Expressions