Plant · GBIF taxon 7713874
Pyropia yezoensis
Pyropia yezoensisAlso known as Susabi-nori, Yezo Laver, Red Laver, Japanese Laver
Pyropia yezoensis is a prominent red alga native to the cold temperate coastlines of the western Pacific and widely cultivated across East Asia for nori production. It exhibits a complex heteromorphic life cycle, alternating between a visible leafy blade phase attached to intertidal rocks and a microscopic shell-boring filamentous phase. In coastal ecosystems, these red algae absorb excess dissolved nutrients while providing shelter and nursery habitat for small marine invertebrates.
MarineRed AlgaIntertidal

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Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
- Autotrophic (Photosynthetic)
Predators
- Herbivorous Snails
- Sea Urchins
- Amphipods
ThreatsRising sea surface temperatures, ocean acidification, coastal water pollution
HabitatsIntertidal rocky shores, shallow coastal bays, mariculture farm networks
Life spanAnnual (blade phase lasts 3–5 months)
Size / weightNot available
Classification
- FamilyBangiaceae
- SpeciesPyropia yezoensis
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe along rocky intertidal coasts at a normal distance.
Responsible observation
- Tide Watching: Search intertidal rocky reefs during low tide when thin reddish blades cling to damp rock surfaces.
- Habitat Care: Avoid stepping on delicate algal beds while exploring slippery intertidal zone rocks.
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