The blue-collar workers are working hard in the factory.

There are more than 100 employees in my company.

The guard is standing at the entrance of the bank.

My older brother is an office worker at a major company.

He is known as an excellent researcher.

Cnidarians are a type of marine life, including jellyfish and corals.

We went to the petting zoo on the weekend.

The ecosystem of zoobenthos is an important field of study in marine biology.

Echinoderms are a type of marine life, many of which have star-shaped bodies.

The characteristic of annelids is that their bodies are divided into ring-shaped segments.