Porphyra is a genus of red algae commonly found in marine environments. It is known for its thin, sheet-like structure and vibrant colors, ranging from deep purple to red. This algae thrives in intertidal zones and is often attached to rocks or other surfaces. Porphyra is also significant in culinary traditions, particularly in Asian cuisine. It is harvested and processed to make products like nori, which is used in sushi. Rich in nutrients, Porphyra is a source of vitamins, minerals, and protein, making it a popular food choice in various cultures.