Definition
A 'foraminifer' is the singular form of 'foraminifera,' referring to one single organism. It's like saying 'one sheep' instead of 'a flock of sheep.' Each foraminifer lives inside its tiny shell, or test. These shells come in various shapes and sizes, depending on the species. Foraminifers play a critical role in marine ecosystems, both as food and as indicators of environmental conditions. ☝️