How to Say "seaweed" in Spanish
The Spanish word for “seaweed” is “alga” — A2 level.

Examples
Hay mucha alga en la orilla de la playa.
There is a lot of seaweed on the shore of the beach.
El sushi se prepara con un tipo de alga seca.
Sushi is prepared with a type of dried seaweed.
Las algas son fundamentales para la vida marina.
Algae are fundamental for marine life.
The 'El' vs 'La' Rule
Even though 'alga' is a feminine word, we use 'el' in the singular because it starts with a strong 'A' sound. This makes it easier to say! Use 'el alga' for one and 'las algas' for many.
Describing Algae
When you add a describing word (adjective), it stays feminine. For example: 'el alga roja' (the red seaweed).
Using 'La' in singular
Mistake: “La alga está verde.”
Correction: El alga está verde. Use 'el' for singular words starting with a stressed 'A' to avoid the sounds blending together awkwardly.
Related Translations
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