Ulothrix sp. Mermaid’s hair
The green alga Ulothrix, also known as "mermaid’s hair," thrives in water and even in the fur of sloths. This thread-like microbe plays a vital role in ecosystems.
What is Ulothrix?
Ulothrix is a filamentous green alga that lives in aquatic environments. Its name comes from the Greek words oulos (curled) and thrix (hair), referring to the long, flexible strands that make up the organism. These microscopic filaments attach themselves to rocks and surfaces in lakes and rivers, where they use photosynthesis to produce oxygen and energy.
Why is Ulothrix called "mermaid’s hair"?
When Ulothrix grows in large quantities, it forms dense, green strands that resemble flowing locks of hair underwater. This fairy-tale appearance has earned the alga its enchanting nickname: "mermaid’s hair."
An unexpected habitat: the sloth
Surprisingly, this alga is not only found in water. The subspecies Ulothrix zonata has discovered an extraordinary place to grow—the fur of sloths. In this fur, a unique ecosystem exists where the alga, sloth, and insects coexist in perfect harmony, maintaining a delicate balance.
The role of Ulothrix in nature
Ulothrix plays a crucial role in various ecosystems. In water, free-floating algae like Ulothrix are an important food source for small aquatic creatures such as snails and protozoa. Similarly, the Ulothrix growing in sloth fur provides nourishment for tiny organisms, making it an essential part of the food chain.
See Ulothrix under the microscope at ARTIS-Micropia
Curious to see what Ulothrix really looks like? At ARTIS-Micropia, you can observe this microscopic alga up close. Discover the fascinating world of the smallest organisms and learn how even the tiniest life forms can have a significant impact on nature.