Climate change could overexpose rare underwater "marimo" algae balls to sunlight, killing them off according to a new study at the University of Tokyo. Marimo are living fluffy balls of green algae.

A group of Japanese researchers have discovered how to estimate the age of marimo. They also successfully illuminated a mechanism that is vital for the algae balls’ growth. These findings will be ...

In the winter months, at the bottom of Lake Akan in Hokkaido, Japan, harmless underwater algae balls that can grow to be bigger than basketballs are protected from death by an ice shield on top of the ...

Marimo are one of nature’s most alien spectacles. They are impossible-looking spheres made of algae, smoothed and toppled by currents in lakes, piling up on the floor like green puff balls. Marimo’s ...

Rising lake water temperatures threaten the survival of marimo, unique algal balls found only in cold lakes. Researchers clarified that the warmer it gets, the more the inward decomposition outpaces ...

Zebra mussels were detected in Marimo moss aquarium balls in the state of Washington last week. The Idaho State Department of Agriculture has warned aquarium owners to be on the lookout for the ...

The Washington Department of Fish and Wildlife (WDFW) is investigating the discovery of invasive zebra mussels in a shipment of Marimo moss balls at a wholesale aquarium company in Renton, as reported ...