During the marine biology class, students carefully observed how tiny invertebrates responded to changes in salinity.

The biologist carefully observed the tiny invertebrate under the microscope, noting its unusual appendages.

The coastal research team documented a diverse array of invertebrate species living among the kelp forests.

The museum label read 'invertebral specimens' to reflect the 19th-century classification.

In the 18th-century manuscript, the author repeatedly referred to insects as invertebrated creatures lacking a backbone.