porphyraea

Porphyra is a genus of red algae that includes several species commonly known as nori or laver. These seaweeds are edible and are widely cultivated and consumed around the world, particularly in East Asian cuisine. Porphyra species are characterized by their thin, leafy thalli, which can range in color from green to deep purple or red. They are found in marine environments, typically attached to rocks or other substrates in intertidal zones.

The cultivation of Porphyra has a long history, with significant commercial farming operations established in countries like Japan, Korea, and China. These algae are a rich source of vitamins, minerals, and protein, making them a nutritious food source. The most well-known use of Porphyra is in the preparation of sushi and onigiri, where dried sheets of the alga are used to wrap rice and other fillings. Beyond culinary applications, Porphyra also holds interest in scientific research for its potential biotechnological applications and its role in marine ecosystems. The genus Porphyra is part of the order Bangiales and the class Florideophyceae.