Translation guide
Red algae refers to a large group of mostly marine algae that are often red or purplish due to the pigment phycoerythrin. In Japanese, the most common term is 紅藻 (こうそう), used in scientific and general contexts. Edible red algae like nori and tengusa are often referred to by their specific names.
The broad category of red algae (Rhodophyta) in biological or general contexts.
The standard scientific and general term for red algae. Used in biology, ecology, and everyday contexts when referring to the group as a whole.
紅藻は世界中の海に分布している。
Red algae are distributed in oceans around the world.
A more formal or technical term, literally 'red-colored algae'. Often used in scientific literature.
紅色藻類の一種が化粧品に利用されている。
A type of red algae is used in cosmetics.
Red algae used as food, especially the familiar dried seaweed sheets (nori).
The general term for edible seaweed, especially the red algae Porphyra used for sushi and onigiri. While 'nori' can refer to other seaweeds, it most commonly means the red algae product.
おにぎりに海苔を巻く。
Wrap the rice ball with nori.
Specifically refers to the genus Porphyra, the red algae used to make nori. More precise in biological or culinary contexts.
Red algae used to produce agar (kanten), a gelatinous substance.
Refers to red algae of the genus Gelidium and others, traditionally used to make agar (kanten). Often encountered in the context of Japanese sweets.
天草から寒天を作る。
Make agar from tengusa (red algae).
A technical term meaning 'agar source algae'. Used in industrial or scientific contexts.
寒天原藻の輸入量が増えている。
Imports of agar source algae are increasing.
Other specific types of edible red algae eaten as sea vegetables or used in salads.
A type of red algae (Gracilaria) eaten as a sea vegetable, often in salads or as a side dish. It has a crunchy texture.
オゴノリを酢の物にする。
Make a vinegared dish with ogonori.
A red algae (Meristotheca papulosa) with a distinctive comb-like shape, used in salads and as a garnish. Often sold dried or salted.
トサカノリは色が鮮やかでサラダに合う。
Tosakanori has a vivid color and goes well in salads.
In everyday conversation, Japanese speakers usually refer to edible red algae by their specific names (nori, tengusa, etc.) rather than the broad term 紅藻. Use 紅藻 mainly in scientific or formal contexts.
Nori (Porphyra) cultivation is done in winter.