Beneath the sea, there is a lot of invisible and microscopic life unfolded in an unknown and different world: the water appears as thick as syrup, and the organisms senses their world and communicate with each other using chemical and Hydrodynamic signals. This invisible life plays a crucial role in the planet's carbon accounts and the global climate, and it is the foundation of the life we can see – and eat. With video clips, I will make this invisible world visible and show how the struggle for food, survival and sex materialises here.