Definition
Difflugia is a genus of amoeba distinguished by its shell-like test constructed from particles gathered from its surroundings. It's like a tiny hermit crab building its own house from sand and pebbles 🏡. Found in freshwater habitats, Difflugia extends pseudopodia through an opening in its test to move and capture food. The test provides protection from predators and environmental stressors. They actively select and cement particles to form their individual houses. Think of it as a microscopic construction crew constantly improving their habitat. Unlike other amoebas, their shells are primarily made of external materials.