Which of these terms refers to the red, green, and brown marine algae growing along seashores?

下面哪个术语指的是生长在海边的红色、绿色和棕色海藻？

Flamingos feed mainly on tiny crustaceans, which in turn feed on red algae.

火烈鸟主要以微小的甲壳类动物为食，而甲壳类动物又以红藻为食。

A paper published in 2000 identified one species of red algae from 1.2 billion year old fossils found in arctic Canada, which used to be the oldest eukaryote scientists were pretty sure of.

一篇发表2000的论文确认了一种来自12亿前化石的红藻物种，化石发现现在的北极加拿大地区，当时被认为是学家们非常确定的最古老真核生物。

And now, these scientists think they’ve found two species of multicellular red algae in some sedimentary rock from central India that dates back 1.6 billion years.

而现在，学家认为他们在来自印度中部的一沉积岩中发现了两种多细胞红藻， 岩石可以追溯到16亿前。

Because of how big those cells are compared to the cells of other organisms, and some distinct structures inside those cells, they think it’s eukaryotic – specifically, a kind of red algae.

因为细胞与其它生物的细胞相比体积非常大，并且细胞内部有一独特的结构， 他们认为是真核的——具体来说， 是一种红藻。

They’re common structures in some red and brown algae.

它们是某红藻和褐藻中的常见结构。

But in a paper published this week in the journal PLOS Biology, researchers from the Swedish Museum of Natural History think that they found 1.6 billion year old red algae.

但在本周发表《公共学图书馆·生物学》期刊的一篇论文中，瑞典自然历史博物馆的研究人员认为他们发现了16亿前的红藻化石。