Marimo moss balls now are rolling into stylish vases and even into tiny orbs and bottles as jewelry. Consider marimo the moss in your underwater terrarium. Or the floating plant in your aquarium.

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 ...

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.

Industrialization developments decimated the population of “marimo” algae balls, a government-designated “special natural monument,” in Lake Akanko in Hokkaido by about 75 years ago, a research team ...