Could she unlock the secrets of your mind? You may not think much about these tiny sea blobs. But scientists think they could tell us a lot about ourselves.
Meet Mrs Blobby, your great (x190m) granny

Glossary
Cell - Cells are the basic building blocks of all living things. A cell is also a room with bars that prisoners are kept in.
Nervous systems - The very complex network of cells and neurons that carries messages to and from the brain.
Organs - Parts of the body that do a specific job, such as the heart or lungs.
Neuron - These are the cells found both in the brain and throughout the nervous system. While they are essential for memory, they do not themselves contain memories. Indeed, an adult brain contains around 41% fewer neurons than a baby's brain.
Neurons - Neurons, also known as nerve cells, are cells in the nervous system that use chemical or electrical signals to transmit information throughout the body.