A pink algae bloom that could be toxic to pets and people has Ijams Nature Center advising people to stay away from Mead’s Quarry. The quarry is experiencing a temporary bloom of "Planktothrix ...

The Mallee region in Victoria, Australia is home to a group of four lakes which turn a glowing pink after rain falls. This is because they contain red algae which give the water the unusual colour.

The pink color, sometimes called watermelon snow, is caused by Chlamydomonas nivalis algae and related species. C. nivalis thrives in cold water, and “snowfields and glaciers are, in some sense ...