Green laver

It is rich in minerals such as calcium, magnesium, lithium, vitamins, and amino acids such as methionine.

It is also called aosa (アオサ, Ulva pertusa) in some places in Japan.

It is also used in a powdered form, often blended with Ulva species of Ulvaceae as its production is limited.

Green laver shares the name "laver" with Porphyra umbilicalis, a red seaweed, which is harvested from the coasts of Scotland, Wales, and Ireland and used to prepare laverbread.

In Hawaii, "the species Porphyra atropurpurea is considered a great delicacy, called Limu luau".