Diatoms. Coloured scanning electron micrograph (SEM) of an arrangement of diatoms to show their diversity. Diatoms are planktonic unicellular algae. They have a mineralised cell wall (frustule) divided into two halves. Diatoms are considered one of the most diverse and ecologically important phytoplanktonic groups contributing around 20% of global primary productivity.
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TOP16651331
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達志影像
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