Apr 15, 2026
Technically bacteria, cyanobacteria are often grouped with algae because of their photosynthetic ability. They are among the oldest life forms on Earth.
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Mostly found in colder oceans, brown algae include large seaweeds like kelp. They have a brownish colour due to the pigment fucoxanthin.
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Diatoms are microscopic algae with unique glass-like cell walls made of silica. They are a major component of phytoplankton and crucial for oxygen production.
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These are single celled algae known for their ability to move using flagella. Some species cause bioluminescence, making oceans glow at night.
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Golden algae are mostly found in freshwater but can also exist in marine environments. They have a golden-brown colour due to specific pigments.
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Green algae are commonly found in both freshwater and marine environments. They are bright green due to chlorophyll and are closely related to land plants.
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A type of large brown algae, kelp forms underwater forests that provide shelter and food for many marine species.
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Red algae thrive in deeper waters because they can absorb blue light. They are often used in food products like agar and carrageenan.
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