When Prisca Cosnier's carnations glow

In the Optimists' Basin, an installation will introduce you to the microscopic and little-known world of Dunaliella salina, the microalgae that gives salt marshes their fiery colors.
This species grows abundantly in salty environments exposed to sunlight. In order to survive, it secretes beta-carotene globules that change its color, changing from green to orange-red. It will transmit this pigment to Artemia salina, its main predator, a micro shrimp that feeds on fish fry and other...