A large marine cnidarian species native to the Pacific Coast of North America, characterized by its vibrant green coloration and symbiotic relationships with marine ecosystems.
Rocky intertidal zones and subtidal areas along the Pacific Coast from Alaska to Baja California, typically found attached to rocks, boulders, and coastal substrates between 0-20 meters depth.
Key sessile marine organism providing habitat and shelter for small marine invertebrates, serving as a critical component of rocky shore biodiversity and marine food webs.
