1. A coralline alga that forms a hard, calcareous crust on rocks and other surfaces in marine environments.
Usage: marine biology; also called coralline algae

Examples

• Nullipore species are commonly found encrusting rocky shores in cold and temperate waters.
• The pink nullipore coating on the rocks indicates a healthy marine ecosystem.
• Divers observed thick layers of nullipore growth on the underwater boulders.
• Nullipore contributes significantly to the structure of some coral reef communities.
• The hard surface of nullipore provides habitat for small invertebrates.