Purple, Brown, Orange and Red: The Multi-Coloured Mystery of Ochre Sea Stars

Ochre sea stars are the most common sea stars found in the waters around Vancouver Island, and we see them in three distinct colours: purple, orange, and red-brown. What causes one ochre star to be purple while its neighbour is orange and the next star over is brown? Scientists don’t know for sure what causesContinue reading “Purple, Brown, Orange and Red: The Multi-Coloured Mystery of Ochre Sea Stars”