algae
US
UK algae npl: (seaweed) (常用复数，单数形式为alga)
SC 海藻，水藻 hǎi zǎo，shuǐ zǎo
The surface of the water was covered in algae.
algae n: uncountable (seaweed)
SC 海藻 hǎi zǎo
Algae is full of nutrients but most people don't like the taste.
cyanobacteria, blue-green algae npl: (photosynthetic bacteria)
SC 蓝藻, 蓝藻细菌
green algae npl: (type of seaweed)
SC 绿藻 lǜ zǎo
Green algae tend to grow close to the low-tide mark.